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> Classifieds > > > Vintage 1960's RCA + German Valvo Tubes EZ81 6CA4 Valvo + many more rectifier tubes

EXPIRED - FOR SALE: Vintage 1960's RCA + German Valvo Tubes EZ81 6CA4 Valvo + many more rectifier tubes

Item #649366803
Info: Vintage 1960's RCA + German Valvo Tubes EZ81 6CA4 Valvo + many more rectifier tubes

Asking Price:
CAD $50.00
Payment method: Cash, Paypal, Money Order, Money Wire, Interac/EMT
Condition: 9 - Excellent (?)
Date Posted: Jul 11, 18 9:38am (PST)
Edited: Aug 05, 18 5:30pm
About Seller: David Dov
David Dov is a premium user
North York,Toronto, ON
Canada
[other classified ads]
Product Brand: Valvo
Product Model: EL84 + EZ81 tubes
Feedback Received: 627  See details
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Description

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For sale never used:

- (1) Valvo Made in Germany EZ81 / 6CA4 Rectifier tube $50.00

Valvo are excellent sounding vintage tubes made in Hamburg Germany
German vintage Valvo tubes are getting harder to find, get them while you still can!
Made in Hamburg Germany

Also have NOS NIB RCA EZ81 / 6CA4 Rectifier Tubes @ $35.00 each

Good solid tested rectifiers
Tube test very strong like new!
Tested very strong from 98 - 110 (a minimum good reading is 70 and higher)
No gas leaks or shorts!
Tube tested on a B&K Dyna Jet tube tester
VERY GOOD LONG LIFE EXPECTANCY!

We have many 6X4 + 6X4W + 6X4WA (EZ90 / 6202)
6X4 / EZ90 / 6202 all test very strong rectifier tubes.
Choose from: G.E. / HIT-RAY / MARCONI / SYLVANIA / RCA / ROGERS / WESTINGHOUSE
From $25.00 each tube including shipping to anywhere in Canada!
Usually ships within 24 hours.


Selling vintage 1960's single 5963 tubes
NOS (New old stock)
All were made in USA
No leaks or shorts
$35.00 each tube

Also have some very RARE NOS/NIB 6E5 General Electric tuning magic eye tubes
6E5 = VT-215 = 6Z-6E5 = UZ-6E5 = 6E5_Japan = CV1906
G.E. + WESTINGHOUSE TUBES Condition: NOS/NIB Never used!
Description:
Tube Type / Number: 6E5
Actual Brand*: G.E.
Quantity of Tubes: 6
Country of Manufacture: Canada
Year Made: Sept 1963
5960.21.100.3434
Lettering Condition: 80%
Plate Construction: Silver Ribbed
Getter Construction: Bottom
Number of Mica Spacers: 2
Mica Shape: U
Clear Glass
Engraved Base
(NIB) Original Boxes Included
$25.00 each or trade?

A Look At A NOS 6E5 Magic Eye Tube - YouTube
Video for 6e5 magic eye tube
▶ 14:37
https://www.youtube.com/watch?v=kgm6Kwi24KA

*Also have several 35W4 and 35Z5 GT half Wave Rectifier Tubes @ $17.00 each or trade ???
35Z5GT/G @ The Valve Museum
www.r-type.org/exhib/aaa0889.htm

Also clearing out many assorted brands of vintage 1950 -60's
ECC82 / 12AU7 + ECC83 / 12AX7 ECC81 / 12AT7 tubes
Both Black + Grey Long/Short Plates are available
Mostly are Jan G.E. / Marconi / RCA / Sylvania / Westinghouse
Both short or long grey + black plates are available.
Test strong like new with very closely matched sections.
All have had very little use.
Lettering and logo prints are all excellent!
All these vintage tubes still do test very strong, like new /very close!
All tubes have been tested twice on my mutual conductance calibrated B+K tester
They will test at or close to new.
No gas leaks or shorts.
Each shipped tube is bubble wrapped and well boxed!
Price is from $25.00 per tube !
Cash, EMT, Canada Post Money orders preferred
PayPal + 4%
1-4 tubes are the same $19.00 shipping cost by Canada Post regular parcel service at buyer's expense
*All orders of $160.00 or more will be shipped Free to anywhere in Canada!

Time to clear out some more tubes!

12AT7 / 12AU7 Tubes BALDWIN / GE / PHILIPS / RCA / ROGERS / SYLVANIA / WESTINGHOUSE

mostly from $25.00 each

Also some vintage 1960-70 tubes:

12AU7 Tubes

12AT7 Tubes

12BY7 Tubes

12AU6 Tubes

12AV6 Tubes

12AT6 Tubes

12BA6 Tubes

12BEG Tubes

12BY7 Tubes

From $25.00 each


The 12AU7, 12BH7, and 6CG7 have very similar electrical characteristics and can usually be substituted for each other.

12AU7 is identical to a 6CG7 electrically and in the circuit it will function identically. However, there is a different heater pin out.
So if you are substituting you need to make a change.
In addition, the 6CG7 draws twice as much heater current so be sure that this will work in your circuit. (This may be one reason it is not as popular as it should be.)

12BH7 requires no circuit modification to substitute for a 12AU7, but the plate resistance is a little lower (5300 vs 7700).
Thus, even though it has a lower u (or amplification factor), the gain may be slightly higher depending on the circuit design.
[This is mainly true for circuits that use an anode resistor load.]
It will also draw a little more current, but the 12BH7 is a beefier tube and can handle it.
For most circuits this should be well within the tolerances of the design, but you can ask the manufacturer to be sure.
With respect to audio reproduction there is a fairly large difference between these three tubes.
The 6CG7 (or 6FQ7 which is the same exact tube) is identical in internal construction to the 6SN7. The 6SN7 has the reputation of being the most linear of the medium mu triodes and the 6CG7 follows suit.
Also, the 6CG7 line is remarkably similar in audio performance across various manufacturers of the same vintage or age.
It is a good tube for early or middle stage amplification and has the added bonus of a grounded shield between sections, which reduces hum and increases channel separation.

The 12BH7 can lend a wonderful life to the tone that sounds great for jazz or vocals. For audio listening, this tube can temper the harshness of CD's.
There is, however, a wider variation in the sound of 12BH7s than 6CG7s, so some tube selection or rolling is in order.
You can find very neutral 12BH7s (watch for a coming blog comparing them) . If you don't want to modify the circuit and are unhappy with your 12AU7--this is a good choice.

The 12AU7 family has the widest variety of tonal characteristics which is probably why this tube is rolled so often by audiophiles.
Personally I find some 12AU7s a little tinny in comparison with the 12BH7 and 6CG7, but there are exceptions,such as RCA clear tops and 5963 tubes!

Part of the fun and magic of tubes is rolling them when listening to different types of music.

All single tubes from $20.00 each
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders
Paypal + 4


**Please read my CAM profile re: shipping policies


Many vintage pairs of 12AT7 + and 12BY7 tubes @ $50.00 a pair!

HP-AMPEREX*G.E.*PHILIPS*RCA*ROGERS*SYLVANIA*WESTINGHOUSE

All tubes have tested very good!
No leaks or shorts

Many pairs of 12AT7 + 12BY7 vintage tubes available

If you are going to roll pairs in your Amp / Pre amp then these are the tubes for you!

All testing very good and most were never used and as good as new!

Also have matching pairs of:

A pair of 12AU7-----50.00
A pair of 6ML8------35.00
A pair of 6AN8------ 60.00
A pair of 6BL8-------35.00
A pair of 6AU8-------35.00
A pair of 6GH8-------35.00
A pair of 6U8A-------35.00
A pair of 6AT6A----- 35.00
A pair of 6AT8A----- 35.00


I also have many more tubes then I need
Most of these tubes for vintage amps,pre-amps,tuners testers and other vintage gear. All tubes have been recently tested using a Jackson 658 tester,and all these have no leaks/shorts!
All tubes are NOS,some are also NIB
Kindly email me for any information and for prices.


Current updated list of available tubes:

0B2 Philips Mini Watt
0C3
4BQ7A
6AB4
6AQ5
6AQ8
6BQ7A
6BQ5/EL84
6AX8
6BN6
6AU6
6AV6
6BN4A
5763
5963
6H1N
6C4
6X4
6X9
6X8
6AL5
6AK6
6AN8A
6AU8A
6CY5
6AT8A
6U8A
6GH8A
8X9
ECH81
12BY7A
12BA6
12BE6
12AU7
12AT7
12SN7
GB-5726
6BN8
6BG6GTB
6CU6
12AH7GT
EF86
EF89
6DA6
13EM7
7591A
50BM8
UCL82 ROGERS
6J6 / ECC91 / 6N15P RUSSIAN NOS
JAN 0A3 WESTINGHOUSE NOS
JAN 0C3 VR105 NOS


Local GTA Toronto pickup welcomed.
Shipping is by Canada Post regular parcel
All orders of 4 or more tubes is free to anywhere in Canada!
All tubes will be properly well wrapped,packed and bubble-wrapped boxed.

If you are going to roll pairs in your Amp / Pre amp then these are the tubes for you!

All testing very good and most were never used and as good as new!
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders
For shipping add $18.00 per packed parcel to anywhere in Canada

Also we have these 12AT7 RCA Black Plate tubes are designed to be used as an amplifier or it can be combined as an oscillator and mixer
(as long as the frequencies are below 300MHz.)
The RCA brand are the higher quality tubes.
The 12AT7 has a mu factor of 60.
Each triode section of the tube acts as a class A amplifier.
Because of this, the tubes can be used in microphone preamplifiers, instrument amps, and recording equipment that is equipped with vacuum tubes. The tube features a double triode with separate cathodes, and because of their design, they are low noise.
They requires a noval nine-contact socket, but can be mounted in any position.
Nice and quiet,excellent tone, dynamics and clarity!
Test strong!

ATTENTION all CAM member tube shoppers...

Just wait until you listen to all the types of 5963's @ $60.00/matched pair!

Another 12AU7A variant
The 5963 IS A MEDIUM-MU TWIN TRIODE. 9—PIN MINIATURE TYPE
A variant of the 12AU7 family of tubes
Very little is written about these 5963 tubes.
It's practically today unknown, yet these are excellent fantastic replacements for 12AU7 tubes!
Smooth and sweet,yet bargain priced compared with many European brands!
Very smooth tube from top to bottom with no weakness!
These are a nice industrial/military upgrade variant type which is nearly identical to the standard 12AU7.
RCA made a nice black plate version of this tube
The 1950’s RCA 5963 sounds more dynamic than the standard 12AU7 Blackplate
It’s also a very good low-noise tube.
Sylvania has a gold pin version, and GE has it in their 5-star broadcast line.
The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine.
It has a rugged cathode and should be quite long lived, similar to the 5814.
That specially-designed cathode is said to withstand long periods of time in cut-off without damaging the tube (cathode poisoning).
This made them a great choice for NORAD computers, which led to a good supply of them on the USA West Coast.
Use them and you will marvel at the quality and value.
They are dead-silent and seem to have an unusually long lifespan.
Very satisfied with the sound they produce.
A truly fine 12AU7 variant from the 1950's, many tube audiophiles feel these can outperform most other NOS 12AU7 tubes!
In computer (and some other) service, tubes were quite often operated as switches, biased to cutoff (no plate current) for long periods of time and then turned on, while always the heater and cathode were warmed up and ready to go.
In ordinary tubes, this leads to a condition known as "cathode interface resistance" or "sleeping sickness."
The cathode interface is a layer of metal, usually nickel, between the cathode sleeve and the oxide coating that emits electrons. In ordinary tubes, under conditions of long-duration tube cutoff, it generates a growing resistance until at last the cathode "goes to sleep."
Computer tube cathodes were specially treated to survive those long periods of cutoff without developing cathode interface resistance

[PDF]5963
www.r-type.org/pdfs/5963.pdf

[PDF]5963
https://frank.pocnet.net/sheets/049/5/5963.pdf
A great article on using computer tubes like the 5963 for audio use:
http://www.effectrode.com/tubes-computer-applications/

5963 tubes (12AU7 variants) from $60.00/pair

G.E. short grey plates (1960's) @ $60.00 / pair
RCA grey short plates (1960's) @ $60.00 / pair
RCA black plates vintage(1950's) @ $60.00 / pair

Also have some Made-in the-USA 12AU7 black plate tubes in very good condition.
Very lightly used! (used/burned in for 10 hours)
Barely broken-in.
Usually sell for over $100.00 Cdn)
You can have them at $80.00/pair!

Selling off some more of my tube collection of 50 years!
This ad is for the very desirable triple mica version G.E. 5814A tubes
Made in USA.
These are an excellent upgrade variant for 12AU7 tubes,
The 5814A is equivalent to a 12AU7WA, it is ruggedized and redesigned
The filament current raised to 175ma per section versus 150ma per section for a 12AU7.
5814A are computer rated, 5814WA is ruggedized
Medium mu twin triode; high-rel, computer-rated variant of 12AU7, as indicated by A suffix; increased heater current.
Base: Noval, B9A
Filament: Vf 12.6 Volts / If 0.175 Ampere / Indirect / Parallel / series AC/DC
All 12AU7 tubes are rated Vhk=200V, 5814A tubes are rated Vhk=100V.
All tubes tested very strong on my B+K tester
Tubes all showed teat results between 2300 - 2450 where minimum on this tubes is 1175.
Brand new tubes usually measure around 2200.
No leaks or shorts.
Tubes are matched with 5%.
$90.00 a matched pair.
Or singles for $50.00

Local GTA pickup also welcomed.
Shipping is by Canada Post regular parcel,
Usually shipping cost is $18.00 per shipment anywhere in Canada.
Keep in mind that 1 - 4 tubes being shipped is the same cost as shipping only a single tube.
All tubes will be properly well bubble wrapped and packaged to ensure safe arrival to you!
Accepted payment is by; Cash/EMT/Canada Post money gram or orders
**FREE Shipping on all orders over $160.00

*As shipping costs to anywhere in Canada is $18.00 (for 1 - 4 tubes)
USD are higher in the United States, shipping is available to USA buyers at their expense,
which usually is $24.00 (for 1 - 4 tubes) to anywhere in the Continental USA

Will bubble wrap and pack most securely for safe arrival
Cash GTA Toronto pick-up is always welcome!
Cash/EMT/Canada Post or Bank money orders
If Paypal +4%

Please see my other ads
Thanks for looking!

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...

Top of the line variants 12AU7 / ECC82 tubes

Singles of: 5814A / 6680 / 6189 /6189 / 5963 tubes are all an upgrade/military grade variants of 12AU7's
G.E / Heathkit / RCA / JAN ROGERS / TUNG-SOL / WESTINGHOUSE
All test very strong
No shorts or gas leaks!

Price is $70.00 a matched pair!
Shipping to anywhere in Canada is available

Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders


The ’12AU7′ Tube
Physical dimensions
Physical dimensions

The 12AU7 is a miniature medium-mu twin triode. This tube finds use as a phase-inverter/splitter in push-pull amplifier circuits in ac/dc radio equipment and in many diversified applications such as multivibrators or oscillators in industrial control devices. The tube is quite pokey and sections can even be connected in parallel to create a power amp with enough current to drive a pair of headphones or even a guitar speaker. A centre tapped heater permits operation of the tube from a 6.3V or a 12.6V heater supply. The tube requires a noval nine-contact socket and may be mounted in any position.

DOUBLE TRIODE (separate cathodes)
Heater Voltage 6.3-12 V
Heater Current 300-150 mA
Plate Voltage 250 V
Plate Current 10.5 mA
Plate Resistance 7700 Ω
Amplification Factor (μ) 20
Plate Dissipation (max) 2.75 W
B9A pinout
B9A base pinout

12AU7 tube equivalents:
12AU7/12AU7A: The common U.S.A. version of this tube. The 12AU7 can only be used in parallel filament circuits. Like the 12AX7, this is not a hassle since virtually all hi-fi tube amps are of the parallel filament design. RCA, GE, and Sylvania actually made most of these tubes, regardless of brand on the label. The early RCA version has ribbed flat black plates with a top getter and a white label. This is an amazing tube, one of the best USA 12AU7 tubes ever made and we have a good stock of these. Still available, and still a bargain since everyone wants the “cleartops”: 1960s versions that have grey-plates and the getter on the side, making the top clear. These “cleartops” are currently the hottest selling 12AU7, and are still a great buy at current prices. Watch this tube….I predict in 5 years it will be as hard to find as the Telefunken smoothplate, and just as expensive! The 1970s new logo version (and the late 1940s-1950s version with the white label) of the RCA 12AU7 has greyplates and a top getter. This grey-plate RCA is about the best bargain you can get in a vintage RCA 12AU7. The GE versions pretty much always used grey-plates and a top getter for this tube. The numbers are etched into the glass with a pattern of dots below the number. Don’t miss trying the “organ stock” 12AU7 tubes that were sold to organ manufacturers. These sweet tubes were screened for audio use in organs, and have the organ brand on the label. Usually sold at bargain prices because of the re-branded label, the RCA cleartop and Raytheon blackplate versions are a great find! Tung Sol made an early “blackglass” version in the late 1940s, which hides the inside of the tube from view, and is very rare; later Tung Sol 12AU7 tubes look like early RCA grey-plates inside. All of these vintage tubes used a chalky label paint, and often the tube label is smeared or partially rubbed off. This does not indicate use or poor quality. Rather, it is an indication of a genuine vintage tube, and all of these are excellent quality.
ECC82: This is the European version of the 12AU7, and is identical to it. The brands in demand are Telefunken, Amperex, and Mullard. Telefunken tubes have a diamond shape molded into the bottom of the glass. Both ribbed plate and the more famous smooth-plate types are available, just like the 12AX7, but are being hunted down and soon may be an endangered species. Amperex and Mullard have tiny date codes etched in the glass near the bottom of the tube. The most popular Amperex are the Holland made Bugle Boy series, with the tiny cartoon tube blowing a bugle on the label. They later went to just a white label that said “Amperex”, and then after that used the orange label with the world logo. The earlier Mullard tubes had the word “Mullard” inside of a shield logo, later versions said “IEC Mullard”. Watch for the very rare long plate versions from the 1950s available in most European brands. These had narrow plates that were about 3mm longer than the 1960s and later versions. The earliest had square shape top getter elements, late long-plates have a halo top getter. Even rarer are the Mullard and Amperex made CV491 longplate square getter tubes, made only for the military. Most of these early Mullard tubes can be spotted not only by the date codes and longplates, but by the distinctive “wrinkle” glass, where the surface of the glass tube is not smooth but rather has tiny wrinkles or sometimes an eggshell texture. These are all tubes of unequalled quality, and are worth the high prices they are commanding these days. Even used ones will blow away any of the trashy tubes in production today. Vintage versions again used the chalky paint, and frequently the labels on any of these tubes are usually smeared.
CV491: A military specification version of the ECC82. These are usually found in Mullard or Brimar versions, but I have seen Siemens as well, and some made by Amperex. This tube was made into the 1990s so careful selection needs to be made. The best are the Mullard and Amperex longplates from the 1950s, which look identical to the longplate ECC82. Ei Yugoslavia made a nice smoothplate version into the late 1980s which sounds surprisingly good despite it’s late vintage “East Europe” stigma attached to it. Overall, these are a step up from the standard ECC82 tubes, since they have military specs.
5814: This is a military spec tube. Sometimes the vintage GE versions may be labelled JG-12AU7WA in white and have 5814 etched into the glass. These are all low microphonic thanks to their rigid mica supports. Older versions have a third mica spacer near the top. These “triple mica” versions are in great demand today. The broadcast versions of this tube are the GE 5-star, and the RCA Command series. These vintage tubes have just started to become a hot item, as N.O.S. stocks of the West Europe types become harder to find. These tubes can withstand many on-off cycles and mechanical shock without a problem.
6189/E82CC: This can be both a military spec tube and a premium industrial tube. Often, the military versions will be marked 12AU7WA in addition to having 6189 etched in the glass. The older vintage of these tubes are usually black-plate with the extra “triple mica” spacer at the top. GE made this in their 5-star line for broadcast. The RCA military 6189 is gold lettered 12AU7WA, has black-plates, and extra support rods. These are excellent step up tubes in the 12AU7 family, when you can find them! Look for super rare triple mica versions from Mazda, Siemens, and Mullard, some with silver plates. Among the best 12AU7 tubes ever made.
5963: This is a nice industrial type which is nearly identical to the standard 12AU7. RCA made a nice black-plate version of this tube, Sylvania has a gold pin version, and GE has it in their 5-star broadcast line. The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine. It has a rugged cathode and should be long lived, similar to the 5814. Watch this tube, as it is plentiful now and prices are low. As audiophiles discover it, the rush will be on!
ATTENTION all CAM member tube shoppers...

Just wait until you listen to all the types of 5963's @ $70.00/matched pair!

Another 12AU7A variant he 5963 IS A MEDIUM-MU TWIN TRIODE. 9—PIN MINIATURE TYPE
A variant of the 12AU7 family of tubes
Very little is written about these 5963 tubes.
It's practically today unknown, yet these are excellent fantastic replacements for 12AU7 tubes!
Smooth and sweet,yet bargain priced compared with many European brands!
Very smooth tube from top to bottom with no weakness!
These are a nice industrial/military upgrade variant type which is nearly identical to the standard 12AU7.
RCA made a nice black plate version of this tube
The 1950’s RCA 5963 sounds more dynamic than the standard 12AU7 Blackplate
It’s also a very good low-noise tube.
Sylvania has a gold pin version, and GE has it in their 5-star broadcast line.
The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine.
It has a rugged cathode and should be quite long lived, similar to the 5814.
That specially-designed cathode is said to withstand long periods of time in cut-off without damaging the tube (cathode poisoning).
This made them a great choice for NORAD computers, which led to a good supply of them on the USA West Coast.
Use them and you will marvel at the quality and value.
They are dead-silent and seem to have an unusually long lifespan.
Very satisfied with the sound they produce.
A truly fine 12AU7 variant from the 1950's, many tube audiophiles feel these can outperform most other NOS 12AU7 tubes!
In computer (and some other) service, tubes were quite often operated as switches, biased to cutoff (no plate current) for long periods of time and then turned on, while always the heater and cathode were warmed up and ready to go.
In ordinary tubes, this leads to a condition known as "cathode interface resistance" or "sleeping sickness."
The cathode interface is a layer of metal, usually nickel, between the cathode sleeve and the oxide coating that emits electrons. In ordinary tubes, under conditions of long-duration tube cutoff, it generates a growing resistance until at last the cathode "goes to sleep."
Computer tube cathodes were specially treated to survive those long periods of cutoff without developing cathode interface resistance

[PDF]5963
www.r-type.org/pdfs/5963.pdf

[PDF]5963
https://frank.pocnet.net/sheets/049/5/5963.pdf
A great article on using computer tubes like the 5963 for audio use:
http://www.effectrode.com/tubes-computer-applications/

5963 tubes (12AU7 variants) from $35.00 each

G.E. short grey plates (1960's) @ $35.00 each
RCA grey short plates (1960's) @ $35.00 each
RCA black plates vintage(1950's) @ $35.00 each
RCA / HP short plates (1960-70's( @ $35.00 each

Also have some Made-in the-USA 12AU7 black plate tubes in very good condition.
Very lightly used! (used/burned in for 10 hours)
Barely broken-in.
Usually sell for over $100.00 Cdn)
You can have them at $60.00/pair!

Selling off some more of my tube collection of 50 years!
This ad is for the very desirable triple mica version G.E. 5814A tubes
Made in USA.
These are an excellent upgrade variant for 12AU7 tubes,
The 5814A is equivalent to a 12AU7WA, it is ruggedized and redesigned
The filament current raised to 175ma per section versus 150ma per section for a 12AU7.
5814A are computer rated, 5814WA is ruggedized
Medium mu twin triode; high-rel, computer-rated variant of 12AU7, as indicated by A suffix; increased heater current.
Base: Noval, B9A
Filament: Vf 12.6 Volts / If 0.175 Ampere / Indirect / Parallel / series AC/DC
All 12AU7 tubes are rated Vhk=200V, 5814A tubes are rated Vhk=100V.
All tubes tested very strong on my B+K tester
Tubes all showed teat results between 2300 - 2450 where minimum on this tubes is 1175.
Brand new tubes usually measure around 2200.
No leaks or shorts.

Local GTA pickup also welcomed.
Shipping is by Canada Post regular parcel,
Usually shipping cost is $18.00 per shipment anywhere in Canada.
Keep in mind that 1 - 4 tubes being shipped is the same cost as shipping only a single tube.
All tubes will be properly well bubble wrapped and packaged to ensure safe arrival to you!
Accepted payment is by; Cash/EMT/Canada Post money gram or orders
**FREE Shipping on all orders over $160.00

*As shipping costs to anywhere in Canada is $18.00 (for 1 - 4 tubes)
USD are higher in the United States, shipping is available to USA buyers at their expense,
which usually is $24.00 (for 1 - 4 tubes) to anywhere in the Continental USA

Will bubble wrap and pack most securely for safe arrival
Cash GTA Toronto pick-up is always welcome!
Cash/EMT/Canada Post or Bank money orders
If Paypal +4%

Please see my other ads
Thanks for looking!

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...

Cash, EMT-Interac transfer preferred
Postal Money Order
PayPal buyer +4%

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...


Clearing out many assorted brands of vintage 1950 -60's
ECC82 / 12AU7 + ECC83 / 12AX7 ECC81 / 12AT7 tubes
Both Black + Grey Long/Short Plates are available
Mostly are Jan G.E. / Marconi / RCA / Sylvania / Westinghouse
Both short or long grey + black plates are available.
Test strong like new with very closely matched sections.
All have had very little use.
Lettering and logo prints are all excellent!
All these vintage tubes still do test very strong, like new /very close!
All tubes have been tested twice on my mutual conductance calibrated B+K tester
They will test at or close to new.
No gas leaks or shorts.
Each shipped tube is bubble wrapped and well boxed!
Price is @ $25.00 per tube !
Cash, EMT, Canada Post Money orders preferred
PayPal + 4%
1-4 tubes are the same $19.00 shipping cost by Canada Post regular parcel service at buyer's expense
*All orders of $160.00 or more will be shipped Free to anywhere in Canada!


ATTENTION all CAM member tube shoppers...

Just wait until you listen to all the types of 5963's @ $70.00/matched pair!

Another 12AU7A variant
The 5963 IS A MEDIUM-MU TWIN TRIODE. 9—PIN MINIATURE TYPE
A variant of the 12AU7 family of tubes
Very little is written about these 5963 tubes.
It's practically today unknown, yet these are excellent fantastic replacements for 12AU7 tubes!
Smooth and sweet,yet bargain priced compared with many European brands!
Very smooth tube from top to bottom with no weakness!
These are a nice industrial/military upgrade variant type which is nearly identical to the standard 12AU7.
RCA made a nice black plate version of this tube
The 1950’s RCA 5963 sounds more dynamic than the standard 12AU7 Blackplate
It’s also a very good low-noise tube.
Sylvania has a gold pin version, and GE has it in their 5-star broadcast line.
The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine.
It has a rugged cathode and should be quite long lived, similar to the 5814.
That specially-designed cathode is said to withstand long periods of time in cut-off without damaging the tube (cathode poisoning).
This made them a great choice for NORAD computers, which led to a good supply of them on the USA West Coast.
Use them and you will marvel at the quality and value.
They are dead-silent and seem to have an unusually long lifespan.
Very satisfied with the sound they produce.
A truly fine 12AU7 variant from the 1950's, many tube audiophiles feel these can outperform most other NOS 12AU7 tubes!
In computer (and some other) service, tubes were quite often operated as switches, biased to cutoff (no plate current) for long periods of time and then turned on, while always the heater and cathode were warmed up and ready to go.
In ordinary tubes, this leads to a condition known as "cathode interface resistance" or "sleeping sickness."
The cathode interface is a layer of metal, usually nickel, between the cathode sleeve and the oxide coating that emits electrons. In ordinary tubes, under conditions of long-duration tube cutoff, it generates a growing resistance until at last the cathode "goes to sleep."
Computer tube cathodes were specially treated to survive those long periods of cutoff without developing cathode interface resistance

[PDF]5963
www.r-type.org/pdfs/5963.pdf

[PDF]5963
https://frank.pocnet.net/sheets/049/5/5963.pdf
A great article on using computer tubes like the 5963 for audio use:
http://www.effectrode.com/tubes-computer-applications/

5963 tubes (12AU7 variants) from $35.00 each

G.E. short grey plates (1960's) @ $35.00 each
RCA grey short plates (1960's) @ $35.00 each
RCA black plates vintage(1950's)@ $35.00 each
HP/Amperex short plates (1960-70's(@ $35.00 each

Also have some Made-in the-USA 12AU7 black plate tubes in very good condition.
Very lightly used! (used/burned in for 10 hours)
Barely broken-in.
Usually sell for over $100.00 Cdn)
You can have them at $80.00/pair!

Selling off some more of my tube collection of 50 years!
This ad is for the very desirable triple mica version G.E. 5814A tubes
Made in USA.
These are an excellent upgrade variant for 12AU7 tubes,
The 5814A is equivalent to a 12AU7WA, it is ruggedized and redesigned
The filament current raised to 175ma per section versus 150ma per section for a 12AU7.
5814A are computer rated, 5814WA is ruggedized
Medium mu twin triode; high-rel, computer-rated variant of 12AU7, as indicated by A suffix; increased heater current.
Base: Noval, B9A
Filament: Vf 12.6 Volts / If 0.175 Ampere / Indirect / Parallel / series AC/DC
All 12AU7 tubes are rated Vhk=200V, 5814A tubes are rated Vhk=100V.
All tubes tested very strong on my B+K tester
Tubes all showed teat results between 2300 - 2450 where minimum on this tubes is 1175.
Brand new tubes usually measure around 2200.
No leaks or shorts.
Tubes are matched with 5%.
$90.00 a matched pair.
Or singles for $50.00

Local GTA pickup also welcomed.
Shipping is by Canada Post regular parcel,
Usually shipping cost is $18.00 per shipment anywhere in Canada.
Keep in mind that 1 - 4 tubes being shipped is the same cost as shipping only a single tube.
All tubes will be properly well bubble wrapped and packaged to ensure safe arrival to you!
Accepted payment is by; Cash/EMT/Canada Post money gram or orders
**FREE Shipping on all orders over $160.00

*As shipping costs to anywhere in Canada is $18.00 (for 1 - 4 tubes)
USD are higher in the United States, shipping is available to USA buyers at their expense,
which usually is $24.00 (for 1 - 4 tubes) to anywhere in the Continental USA

Will bubble wrap and pack most securely for safe arrival
Cash GTA Toronto pick-up is always welcome!
Cash/EMT/Canada Post or Bank money orders
If Paypal +4%

Please see my other ads
Thanks for looking!

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...

Selling off some more of my tube collection of 50 years!
This ad is for the very desirable triple mica version G.E. 5814A tubes
Made in USA
These are an excellent upgrade variant for 12AU7 tubes,
The 5814A is equivalent to a 12AU7WA, it is ruggedized and redesigned
The filament current raised to 175ma per section versus 150ma per section for a 12AU7.
5814A are computer rated, 5814WA is ruggedized
Medium mu twin triode; high-rel, computer-rated variant of 12AU7, as indicated by A suffix; increased heater current.
Base: Noval, B9A
Filament: Vf 12.6 Volts / If 0.175 Ampere / Indirect / Parallel / series AC/DC
All 12AU7 tubes are rated Vhk=200V, 5814A tubes are rated Vhk=100V.
All tubes tested very strong on my B+K tester
Tubes all showed teat results between 2300 - 2450 where minimum on this tubes is 1175.
Brand new tubes usually measure around 2200.
No leaks or shorts.
Tubes are matched with 5% or less!
$100.00 a matched pair.


Local GTA pickup also welcomed.
Shipping is by Canada Post regular parcel,
Usually shipping cost is $18.00 per shipment anywhere in Canada.
Keep in mind that 1 - 4 tubes being shipped is the same cost as shipping only a single tube.
All tubes will be properly well bubble wrapped and packaged to ensure safe arrival to you!
Accepted payment is by; Cash/EMT/Canada Post money gram or orders
**FREE Shipping on all orders over $160.00

*As shipping costs to anywhere in Canada is $18.00 (for 1 - 4 tubes)
USD are higher in the United States, shipping is available to USA buyers at their expense,
which usually is $24.00 (for 1 - 4 tubes) to anywhere in the Continental USA

Will bubble wrap and pack most securely for safe arrival
Cash GTA Toronto pick-up is always welcome!
Cash/EMT/Canada Post or Bank money orders
If Paypal +4%

Please see my other ads
Thanks for looking!

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...


Cash, EMT-Interac transfer preferred
Postal Money Order
PayPal buyer +4%



ATTENTION all CAM member tube shoppers...

Just wait until you listen to all the types of 5963's @ $60.00/matched pair!

Another 12AU7A variant
The 5963 IS A MEDIUM-MU TWIN TRIODE. 9—PIN MINIATURE TYPE
A variant of the 12AU7 family of tubes
Very little is written about these 5963 tubes.
It's practically today unknown, yet these are excellent fantastic replacements for 12AU7 tubes!
Smooth and sweet,yet bargain priced compared with many European brands!
Very smooth tube from top to bottom with no weakness!
These are a nice industrial/military upgrade variant type which is nearly identical to the standard 12AU7.
RCA made a nice black plate version of this tube
The 1950’s RCA 5963 sounds more dynamic than the standard 12AU7 Blackplate
It’s also a very good low-noise tube.
Sylvania has a gold pin version, and GE has it in their 5-star broadcast line.
The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine.
It has a rugged cathode and should be quite long lived, similar to the 5814.
That specially-designed cathode is said to withstand long periods of time in cut-off without damaging the tube (cathode poisoning).
This made them a great choice for NORAD computers, which led to a good supply of them on the USA West Coast.
Use them and you will marvel at the quality and value.
They are dead-silent and seem to have an unusually long lifespan.
Very satisfied with the sound they produce.
A truly fine 12AU7 variant from the 1950's, many tube audiophiles feel these can outperform most other NOS 12AU7 tubes!
In computer (and some other) service, tubes were quite often operated as switches, biased to cutoff (no plate current) for long periods of time and then turned on, while always the heater and cathode were warmed up and ready to go.
In ordinary tubes, this leads to a condition known as "cathode interface resistance" or "sleeping sickness."
The cathode interface is a layer of metal, usually nickel, between the cathode sleeve and the oxide coating that emits electrons. In ordinary tubes, under conditions of long-duration tube cutoff, it generates a growing resistance until at last the cathode "goes to sleep."
Computer tube cathodes were specially treated to survive those long periods of cutoff without developing cathode interface resistance

[PDF]5963
www.r-type.org/pdfs/5963.pdf

[PDF]5963
https://frank.pocnet.net/sheets/049/5/5963.pdf
A great article on using computer tubes like the 5963 for audio use:
http://www.effectrode.com/tubes-computer-applications/

5963 tubes (12AU7 variants) from $30.00 each

G.E. short grey plates (1960's) @ $60.00 / pair
RCA grey short plates (1960's) @ $60.00 / pair
RCA black plates vintage(1950's) @ $60.00 / pair
RCA HP short plates (1960-70's(@ $35.00 each tube

Also have some Made-in the-USA 12AU7 black plate tubes in very good condition.
Very lightly used! (used/burned in for 10 hours)
Barely broken-in.
Usually sell for over $100.00 Cdn)
You can have them at $80.00/pair!

Selling off some more of my tube collection of 50 years!
This ad is for the very desirable triple mica version G.E. 5814A tubes
Made in USA.
These are an excellent upgrade variant for 12AU7 tubes,
The 5814A is equivalent to a 12AU7WA, it is ruggedized and redesigned
The filament current raised to 175ma per section versus 150ma per section for a 12AU7.
5814A are computer rated, 5814WA is ruggedized
Medium mu twin triode; high-rel, computer-rated variant of 12AU7, as indicated by A suffix; increased heater current.
Base: Noval, B9A
Filament: Vf 12.6 Volts / If 0.175 Ampere / Indirect / Parallel / series AC/DC
All 12AU7 tubes are rated Vhk=200V, 5814A tubes are rated Vhk=100V.
All tubes tested very strong on my B+K tester
Tubes all showed teat results between 2300 - 2450 where minimum on this tubes is 1175.
Brand new tubes usually measure around 2200.
No leaks or shorts.
Tubes are matched with 5%.
$90.00 a matched pair.
Or singles for $50.00

Local GTA pickup also welcomed.
Shipping is by Canada Post regular parcel,
Usually shipping cost is $18.00 per shipment anywhere in Canada.
Keep in mind that 1 - 4 tubes being shipped is the same cost as shipping only a single tube.
All tubes will be properly well bubble wrapped and packaged to ensure safe arrival to you!
Accepted payment is by; Cash/EMT/Canada Post money gram or orders
**FREE Shipping on all orders over $160.00

*As shipping costs to anywhere in Canada is $18.00 (for 1 - 4 tubes)
USD are higher in the United States, shipping is available to USA buyers at their expense,
which usually is $24.00 (for 1 - 4 tubes) to anywhere in the Continental USA

Will bubble wrap and pack most securely for safe arrival
Cash GTA Toronto pick-up is always welcome!
Cash/EMT/Canada Post or Bank money orders
If Paypal +4%

Please see my other ads
Thanks for looking!

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...



Cash, EMT-Interac transfer preferred
Postal Money Order
PayPal buyer +4%


ATTENTION all CAM member tube shoppers...

Just wait until you listen to all the types of 5963's @ $60.00/matched pair!

Another 12AU7A variant
The 5963 IS A MEDIUM-MU TWIN TRIODE. 9—PIN MINIATURE TYPE
A variant of the 12AU7 family of tubes
Very little is written about these 5963 tubes.
It's practically today unknown, yet these are excellent fantastic replacements for 12AU7 tubes!
Smooth and sweet,yet bargain priced compared with many European brands!
Very smooth tube from top to bottom with no weakness!
These are a nice industrial/military upgrade variant type which is nearly identical to the standard 12AU7.
RCA made a nice black plate version of this tube
The 1950’s RCA 5963 sounds more dynamic than the standard 12AU7 Blackplate
It’s also a very good low-noise tube.
Sylvania has a gold pin version, and GE has it in their 5-star broadcast line.
The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine.
It has a rugged cathode and should be quite long lived, similar to the 5814.
That specially-designed cathode is said to withstand long periods of time in cut-off without damaging the tube (cathode poisoning).
This made them a great choice for NORAD computers, which led to a good supply of them on the USA West Coast.
Use them and you will marvel at the quality and value.
They are dead-silent and seem to have an unusually long lifespan.
Very satisfied with the sound they produce.
A truly fine 12AU7 variant from the 1950's, many tube audiophiles feel these can outperform most other NOS 12AU7 tubes!
In computer (and some other) service, tubes were quite often operated as switches, biased to cutoff (no plate current) for long periods of time and then turned on, while always the heater and cathode were warmed up and ready to go.
In ordinary tubes, this leads to a condition known as "cathode interface resistance" or "sleeping sickness."
The cathode interface is a layer of metal, usually nickel, between the cathode sleeve and the oxide coating that emits electrons. In ordinary tubes, under conditions of long-duration tube cutoff, it generates a growing resistance until at last the cathode "goes to sleep."
Computer tube cathodes were specially treated to survive those long periods of cutoff without developing cathode interface resistance

[PDF]5963
www.r-type.org/pdfs/5963.pdf

[PDF]5963
https://frank.pocnet.net/sheets/049/5/5963.pdf
A great article on using computer tubes like the 5963 for audio use:
http://www.effectrode.com/tubes-computer-applications/

5963 tubes (12AU7 variants) from $60.00/pair

G.E. short grey plates (1960's) @ $60.00 / pair
RCA grey short plates (1960's) @ $60.00 / pair
RCA black plates vintage(1950's) @ $60.00 / pair

Also have some Made-in the-USA 12AU7 black plate tubes in very good condition.
Very lightly used! (used/burned in for 10 hours)
Barely broken-in.
Usually sell for over $100.00 Cdn)
You can have them at $80.00/pair!

Selling off some more of my tube collection of 50 years!
This ad is for the very desirable triple mica version G.E. 5814A tubes
Made in USA.
These are an excellent upgrade variant for 12AU7 tubes,
The 5814A is equivalent to a 12AU7WA, it is ruggedized and redesigned
The filament current raised to 175ma per section versus 150ma per section for a 12AU7.
5814A are computer rated, 5814WA is ruggedized
Medium mu twin triode; high-rel, computer-rated variant of 12AU7, as indicated by A suffix; increased heater current.
Base: Noval, B9A
Filament: Vf 12.6 Volts / If 0.175 Ampere / Indirect / Parallel / series AC/DC
All 12AU7 tubes are rated Vhk=200V, 5814A tubes are rated Vhk=100V.
All tubes tested very strong on my B+K tester
Tubes all showed teat results between 2300 - 2450 where minimum on this tubes is 1175.
Brand new tubes usually measure around 2200.
No leaks or shorts.
Tubes are matched with 5%.
$90.00 a matched pair.
Or singles for $50.00

Local GTA pickup also welcomed.
Shipping is by Canada Post regular parcel,
Usually shipping cost is $18.00 per shipment anywhere in Canada.
Keep in mind that 1 - 4 tubes being shipped is the same cost as shipping only a single tube.
All tubes will be properly well bubble wrapped and packaged to ensure safe arrival to you!
Accepted payment is by; Cash/EMT/Canada Post money gram or orders
**FREE Shipping on all orders over $160.00

*As shipping costs to anywhere in Canada is $18.00 (for 1 - 4 tubes)
USD are higher in the United States, shipping is available to USA buyers at their expense,
which usually is $24.00 (for 1 - 4 tubes) to anywhere in the Continental USA

Will bubble wrap and pack most securely for safe arrival
Cash GTA Toronto pick-up is always welcome!
Cash/EMT/Canada Post or Bank money orders
If Paypal +4%

Please see my other ads
Thanks for looking!

ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...

Top of the line variants 12AU7 / ECC82 tubes

Singles of: 5814A / 6680 / 6189 /6189 / 5963 tubes are all an upgrade/military grade variants of 12AU7's
G.E / Heathkit / RCA / JAN ROGERS / TUNG-SOL / WESTINGHOUSE
All test very strong
No shorts or gas leaks!

Price is $70.00 a matched pair!
Shipping to anywhere in Canada is available

Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders


The ’12AU7′ Tube
Physical dimensions
Physical dimensions

The 12AU7 is a miniature medium-mu twin triode. This tube finds use as a phase-inverter/splitter in push-pull amplifier circuits in ac/dc radio equipment and in many diversified applications such as multivibrators or oscillators in industrial control devices. The tube is quite pokey and sections can even be connected in parallel to create a power amp with enough current to drive a pair of headphones or even a guitar speaker. A centre tapped heater permits operation of the tube from a 6.3V or a 12.6V heater supply. The tube requires a noval nine-contact socket and may be mounted in any position.

DOUBLE TRIODE (separate cathodes)
Heater Voltage 6.3-12 V
Heater Current 300-150 mA
Plate Voltage 250 V
Plate Current 10.5 mA
Plate Resistance 7700 Ω
Amplification Factor (μ) 20
Plate Dissipation (max) 2.75 W
B9A pinout
B9A base pinout

12AU7 tube equivalents:
12AU7/12AU7A: The common U.S.A. version of this tube. The 12AU7 can only be used in parallel filament circuits. Like the 12AX7, this is not a hassle since virtually all hi-fi tube amps are of the parallel filament design. RCA, GE, and Sylvania actually made most of these tubes, regardless of brand on the label. The early RCA version has ribbed flat black plates with a top getter and a white label. This is an amazing tube, one of the best USA 12AU7 tubes ever made and we have a good stock of these. Still available, and still a bargain since everyone wants the “cleartops”: 1960s versions that have grey-plates and the getter on the side, making the top clear. These “cleartops” are currently the hottest selling 12AU7, and are still a great buy at current prices. Watch this tube….I predict in 5 years it will be as hard to find as the Telefunken smoothplate, and just as expensive! The 1970s new logo version (and the late 1940s-1950s version with the white label) of the RCA 12AU7 has greyplates and a top getter. This grey-plate RCA is about the best bargain you can get in a vintage RCA 12AU7. The GE versions pretty much always used grey-plates and a top getter for this tube. The numbers are etched into the glass with a pattern of dots below the number. Don’t miss trying the “organ stock” 12AU7 tubes that were sold to organ manufacturers. These sweet tubes were screened for audio use in organs, and have the organ brand on the label. Usually sold at bargain prices because of the re-branded label, the RCA cleartop and Raytheon blackplate versions are a great find! Tung Sol made an early “blackglass” version in the late 1940s, which hides the inside of the tube from view, and is very rare; later Tung Sol 12AU7 tubes look like early RCA grey-plates inside. All of these vintage tubes used a chalky label paint, and often the tube label is smeared or partially rubbed off. This does not indicate use or poor quality. Rather, it is an indication of a genuine vintage tube, and all of these are excellent quality.
ECC82: This is the European version of the 12AU7, and is identical to it. The brands in demand are Telefunken, Amperex, and Mullard. Telefunken tubes have a diamond shape molded in


Additional Information:

Aug 05, 18 5:19pm
We have many 6X4 + 6X4W + 6X4WA (EZ90 / 6202)
6X4 / EZ90 / 6202 all test very strong rectifier tubes.
Choose from: G.E. / HIT-RAY / MARCONI / SYLVANIA / RCA / ROGERS / WESTINGHOUSE
From $25.00 each tube including shipping to anywhere in Canada!
Usually ships within 24 hours.
NOS/NIB Vintage RCA EZ81 / 6CA4 rectifier tubes (Never used)
All tubes are in the original boxes NOS NIB.
Vintage 6CA4 (EZ81) rectifier tubes for amps like Eico, Scott, Dynaco
All tubes test as new with no leaks or shorts
All test very strong like new (never used)
All tubes test as new with no leaks or shorts
These are getting a little harder to find now especially New Old Stock
These are good for Eico/Dynaco/Scott,etc....
Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
$35.00 each + shipping

4 x Marconi 6AV5 GA Output tubes @ $20.00 per each tube

Also have 5AR4 / GZ34 Rectifier Fat Boy tubes!
Tests like new, has big grey plates and were originally branded PHILIPS, RCA or SYLVANIA
These rectifiers can allow the amp a very zippy response with lots of "push" behind the note, with the sensation that the note is more "forward." This tube makes a huge difference in the performance of your amp!
This version of the 5AR4 has a very large glass envelope like a 6L6GC, hence where it got the "Fat Boy" name
These tubes have a most sweet and warm snappy sound, with amazing power!
$100.00 each with shipping included to anywhere in Canada!
Payable by EMT
PayPal + 4%



Also a Marconi (Western Electric) 5R4GY USA NOS NIB.
Very rare coke bottle shaped tube
Excellent condition.
Tested on my calibrated B&K
Good from 65
Tube Tests = 95/100
Free shipping included to anywhere in Canada
$65.00
Payable by Cash, EMT,
Paypal +4%

EMT / Canada Post money orders or cash
If Paypal +4%

Local GTA pickup also welcomed.
Accepted payment is by; Cash / EMT Interac Transfer / Canada Post money gram or orders
No exchange or refunds
Thanks most kindly for looking!

Selling vintage 1960's single 5963 tubes
ALSO Selling vintage 1960 - 70's single 5963 + many other tubes
NOS (New old stock)
All were made in USA
No leaks or shorts
$35.00 each tube

Also have some very RARE NOS/NIB 6E5 General Electric tuning magic eye tubes
6E5 = VT-215 = 6Z-6E5 = UZ-6E5 = 6E5_Japan = CV1906
G.E. + WESTINGHOUSE TUBES Condition: NOS/NIB Never used!
Description:
Tube Type / Number: 6E5
Actual Brand*: G.E.
Quantity of Tubes: 6
Country of Manufacture: Canada
Year Made: Sept 1963
5960.21.100.3434
Lettering Condition: 80%
Plate Construction: Silver Ribbed
Getter Construction: Bottom
Number of Mica Spacers: 2
Mica Shape: U
Clear Glass
Engraved Base
(NIB) Original Boxes Included
$25.00 each or trade?

A Look At A NOS 6E5 Magic Eye Tube - YouTube
Video for 6e5 magic eye tube
▶ 14:37
https://www.youtube.com/watch?v=kgm6Kwi24KA

*Also have several 35W4 and 35Z5 GT half Wave Rectifier Tubes @ $17.00 each or trade ???
35Z5GT/G @ The Valve Museum
www.r-type.org/exhib/aaa0889.htm

Also clearing out many assorted brands of vintage 1950 -60's
ECC82 / 12AU7 + ECC83 / 12AX7 ECC81 / 12AT7 tubes
Both Black + Grey Long/Short Plates are available
Mostly are Jan G.E. / Marconi / RCA / Sylvania / Westinghouse
Both short or long grey + black plates are available.
Test strong like new with very closely matched sections.
All have had very little use.
Lettering and logo prints are all excellent!
All these vintage tubes still do test very strong, like new /very close!
All tubes have been tested twice on my mutual conductance calibrated B+K tester
They will test at or close to new.
No gas leaks or shorts.
Each shipped tube is bubble wrapped and well boxed!
Price is from $25.00 per tube !

- (1) Valvo Made in Germany EZ81 / 6CA4 Rectifier tube $50.00

Valvo are excellent sounding vintage tubes made in Hamburg Germany
German vintage Valvo tubes are getting harder to find, get them while you still can!
Made in Hamburg Germany

Also have NOS NIB RCA EZ81 / 6CA4 Rectifier Tubes @ $35.00 each

Good solid tested rectifiers
Tube test very strong like new!
Tested very strong from 98 - 110 (a minimum good reading is 70 and higher)
No gas leaks or shorts!
Tube tested on a B&K Dyna Jet tube tester
VERY GOOD LONG LIFE EXPECTANCY!

We have many 6X4 + 6X4W + 6X4WA (EZ90 / 6202)
6X4 / EZ90 / 6202 all test very strong rectifier tubes.
Choose from: G.E. / HIT-RAY / MARCONI / SYLVANIA / RCA / ROGERS / WESTINGHOUSE
From $25.00 each tube including shipping to anywhere in Canada!
Usually ships within 24 hours.


Selling vintage 1960's single 5963 tubes
NOS (New old stock)
All were made in USA
No leaks or shorts
$35.00 each tube

Also have some very RARE NOS/NIB 6E5 General Electric tuning magic eye tubes
6E5 = VT-215 = 6Z-6E5 = UZ-6E5 = 6E5_Japan = CV1906
G.E. + WESTINGHOUSE TUBES Condition: NOS/NIB Never used!
Description:
Tube Type / Number: 6E5
Actual Brand*: G.E.
Quantity of Tubes: 6
Country of Manufacture: Canada
Year Made: Sept 1963
5960.21.100.3434
Lettering Condition: 80%
Plate Construction: Silver Ribbed
Getter Construction: Bottom
Number of Mica Spacers: 2
Mica Shape: U
Clear Glass
Engraved Base
(NIB) Original Boxes Included
$25.00 each or trade?

A Look At A NOS 6E5 Magic Eye Tube - YouTube
Video for 6e5 magic eye tube
▶ 14:37
https://www.youtube.com/watch?v=kgm6Kwi24KA

*Also have several 35W4 and 35Z5 GT half Wave Rectifier Tubes @ $17.00 each or trade ???
35Z5GT/G @ The Valve Museum
www.r-type.org/exhib/aaa0889.htm

Also clearing out many assorted brands of vintage 1950 -60's
ECC82 / 12AU7 + ECC83 / 12AX7 ECC81 / 12AT7 tubes
Both Black + Grey Long/Short Plates are available
Mostly are Jan G.E. / Marconi / RCA / Sylvania / Westinghouse
Both short or long grey + black plates are available.
Test strong like new with very closely matched sections.
All have had very little use.
Lettering and logo prints are all excellent!
All these vintage tubes still do test very strong, like new /very close!
All tubes have been tested twice on my mutual conductance calibrated B+K tester
They will test at or close to new.
No gas leaks or shorts.
Each shipped tube is bubble wrapped and well boxed!
Price is from $25.00 per tube !
Cash, EMT, Canada Post Money orders preferred
PayPal + 4%
1-4 tubes are the same $19.00 shipping cost by Canada Post regular parcel service at buyer's expense
*All orders of $160.00 or more will be shipped Free to anywhere in Canada!

Time to clear out some more tubes!

12AT7 / 12AU7 Tubes BALDWIN / GE / PHILIPS / RCA / ROGERS / SYLVANIA / WESTINGHOUSE

mostly from $25.00 each

Also some vintage 1960-70 tubes:

12AU7 Tubes

12AT7 Tubes

12BY7 Tubes

12AU6 Tubes

12AV6 Tubes

12AT6 Tubes

12BA6 Tubes

12BEG Tubes

12BY7 Tubes

From $25.00 each


The 12AU7, 12BH7, and 6CG7 have very similar electrical characteristics and can usually be substituted for each other.

12AU7 is identical to a 6CG7 electrically and in the circuit it will function identically. However, there is a different heater pin out.
So if you are substituting you need to make a change.
In addition, the 6CG7 draws twice as much heater current so be sure that this will work in your circuit. (This may be one reason it is not as popular as it should be.)

12BH7 requires no circuit modification to substitute for a 12AU7, but the plate resistance is a little lower (5300 vs 7700).
Thus, even though it has a lower u (or amplification factor), the gain may be slightly higher depending on the circuit design.
[This is mainly true for circuits that use an anode resistor load.]
It will also draw a little more current, but the 12BH7 is a beefier tube and can handle it.
For most circuits this should be well within the tolerances of the design, but you can ask the manufacturer to be sure.
With respect to audio reproduction there is a fairly large difference between these three tubes.
The 6CG7 (or 6FQ7 which is the same exact tube) is identical in internal construction to the 6SN7. The 6SN7 has the reputation of being the most linear of the medium mu triodes and the 6CG7 follows suit.
Also, the 6CG7 line is remarkably similar in audio performance across various manufacturers of the same vintage or age.
It is a good tube for early or middle stage amplification and has the added bonus of a grounded shield between sections, which reduces hum and increases channel separation.

The 12BH7 can lend a wonderful life to the tone that sounds great for jazz or vocals. For audio listening, this tube can temper the harshness of CD's.
There is, however, a wider variation in the sound of 12BH7s than 6CG7s, so some tube selection or rolling is in order.
You can find very neutral 12BH7s (watch for a coming blog comparing them) . If you don't want to modify the circuit and are unhappy with your 12AU7--this is a good choice.

The 12AU7 family has the widest variety of tonal characteristics which is probably why this tube is rolled so often by audiophiles.
Personally I find some 12AU7s a little tinny in comparison with the 12BH7 and 6CG7, but there are exceptions,such as RCA clear tops and 5963 tubes!

Part of the fun and magic of tubes is rolling them when listening to different types of music.

All single tubes from $20.00 each
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders
Paypal + 4


**Please read my CAM profile re: shipping policies


Many vintage pairs of 12AT7 + and 12BY7 tubes @ $50.00 a pair!

HP-AMPEREX*G.E.*PHILIPS*RCA*ROGERS*SYLVANIA*WESTINGHOUSE

All tubes have tested very good!
No leaks or shorts

Many pairs of 12AT7 + 12BY7 vintage tubes available

If you are going to roll pairs in your Amp / Pre amp then these are the tubes for you!

All testing very good and most were never used and as good as new!

Also have matching pairs of:

A pair of 12AU7-----50.00
A pair of 6ML8------35.00
A pair of 6AN8------ 60.00
A pair of 6BL8-------35.00
A pair of 6AU8-------35.00
A pair of 6GH8-------35.00
A pair of 6U8A-------35.00
A pair of 6AT6A----- 35.00
A pair of 6AT8A----- 35.00


I also have many more tubes then I need
Most of these tubes for vintage amps,pre-amps,tuners testers and other vintage gear. All tubes have been recently tested using a Jackson 658 tester,and all these have no leaks/shorts!
All tubes are NOS,some are also NIB
Kindly email me for any information and for prices.


Current updated list of available tubes:

0B2 Philips Mini Watt
0C3
4BQ7A
6AB4
6AQ5
6AQ8
6BQ7A
6BQ5/EL84
6AX8
6BN6
6AU6
6AV6
6BN4A
5763
5963
6H1N
6C4
6X4
6X9
6X8
6AL5
6AK6
6AN8A
6AU8A
6CY5
6AT8A
6U8A
6GH8A
8X9
ECH81
12BY7A
12BA6
12BE6
12AU7
12AT7
12SN7
GB-5726
6BN8
6BG6GTB
6CU6
12AH7GT
EF86
EF89
6DA6
13EM7
7591A
50BM8
UCL82 ROGERS
6J6 / ECC91 / 6N15P RUSSIAN NOS
JAN 0A3 WESTINGHOUSE NOS
JAN 0C3 VR105 NOS


Local GTA Toronto pickup welcomed.
Shipping is by Canada Post regular parcel
All orders of 4 or more tubes is free to anywhere in Canada!
All tubes will be properly well wrapped,packed and bubble-wrapped boxed.

If you are going to roll pairs in your Amp / Pre amp then these are the tubes for you!

All testing very good and most were never used and as good as new!
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders
For shipping add $18.00 per packed parcel to anywhere in Canada

Also we have these 12AT7 RCA Black Plate tubes are designed to be used as an amplifier or it can be combined as an oscillator and mixer
(as long as the frequencies are below 300MHz.)
The RCA brand are the higher quality tubes.
The 12AT7 has a mu factor of 60.
Each triode section of the tube acts as a class A amplifier.
Because of this, the tubes can be used in microphone preamplifiers, instrument amps, and recording equipment that is equipped with vacuum tubes. The tube features a double triode with separate cathodes, and because of their design, they are low noise.
They requires a noval nine-contact socket, but can be mounted in any position.
Nice and quiet,excellent tone, dynamics and clarity!
Test strong!

Up for sale is (1) single Mullard Bausch & Lomb 12AX7/ECC83 10 series tube.
This tube is in very good and strong working and cosmetic condition.
Pins are clean!
Some of the yellow screen prints have slightly rubbed off.
This tube is genuine used old stock made in Great Britain.
This is a medical grade tube as it was made for Bausch & Lomb.
The 10M series are supposed to be good for 10,000+ hours of operation.
The Mullard B&L 12AX7/ECC83 10 series tubes,
are told to have the most quiet background in their class,
and produce excellent detail, warm and sweet sound with a lovely mid range.
You will hear every note, each and every musical instrument!
I hate to let it go but I have way too many tubes still more then I'll need.
Please examine the photos as they are part of the description.
Payable by Cash, EMT-Interac, Canada Post Money Grams
PayPal +4%
Buyer pays for shipping all orders under $159.99
Seller pays for shippping on all orders $160.00 or more!


Bubble wrapped and boxed to allow most securely packaged for safe arrival.
Tested on my B+K tube tester with all good strong readings
No gas or shorts
GTA Toronto CASH pick-up is always welcome!

Shipping available at buyers expense which usually is $20.00/Quad to anywhere in Canada
Payment is only by;Cash,Canada Post money gram/orders,EMT/money transfers are preferred.
For shipping +$20.00 to anywhere in Canada on all orders less then $160.00
*Free shipping on orders of $160.00 or more!

These are excellent musical tubes
All sales final
No exchange/No returns

NOS/NIB 6E5 General Electric tuning magic eye tubes
6E5 = VT-215 = 6Z-6E5 = UZ-6E5 = 6E5_Japan = CV1906
G.E. + WESTINGHOUSE TUBES Condition: NOS/NIB Never used!
Description:
Tube Type / Number: 6E5
Actual Brand*: G.E.
Quantity of Tubes: 6
Country of Manufacture: Canada
Year Made: Sept 1963
5960.21.100.3434
Lettering Condition: 80%
Plate Construction: Silver Ribbed
Getter Construction: Bottom
Number of Mica Spacers: 2
Mica Shape: U
Clear Glass
Engraved Base
(NIB) Original Boxes Included
$35.00 each includes shipping to anywhere in Canada

A Look At A NOS 6E5 Magic Eye Tube - YouTube
Video for 6e5 magic eye tube
▶ 14:37
https://www.youtube.com/watch?v=kgm6Kwi24KA

May 13, 18 5:52pm
NOS/NIB 6E5 General Electric tuning magic eye tubes
6E5 = VT-215 = 6Z-6E5 = UZ-6E5 = 6E5_Japan = CV1906
G.E. + WESTINGHOUSE TUBES Condition: NOS/NIB Never used!
Description:
Tube Type / Number: 6E5
Actual Brand*: G.E.
Quantity of Tubes: 6
Country of Manufacture: Canada
Year Made: Sept 1963
5960.21.100.3434
Lettering Condition: 80%
Plate Construction: Silver Ribbed
Getter Construction: Bottom
Number of Mica Spacers: 2
Mica Shape: U
Clear Glass
Engraved Base
(NIB) Original Boxes Included
$35.00 each includes shipping to anywhere in Canada

A Look At A NOS 6E5 Magic Eye Tube - YouTube
Video for 6e5 magic eye tube
▶ 14:37
https://www.youtube.com/watch?v=kgm6Kwi24KA



*Also have several 35W4 and 35Z5 GT half Wave Rectifier Tubes @ $12.00 each or trade ???

35Z5GT/G @ The Valve Museum
www.r-type.org/exhib/aaa0889.htm

Jun 01, 18 10:27am
Best offer or trade:
4 x Marconi 6AV5 GA Output tubes @ $80.00 for all 4 tubes including shipping to anywhere in Canada!


Also have some NOS/NIB Vintage RCA EZ81 / 6CA4 rectifier tubes (Never used)
All tubes are in the original boxes NOS NIB.
Vintage 6CA4 (EZ81) rectifier tubes for amps like Eico, Scott, Dynaco
All tubes test as new with no leaks or shorts
Each tube = $40 + shipping
All test very strong like new (never used)
All tubes test as new with no leaks or shorts
These are getting a little harder to find now especially New Old Stock
These are good for Eico/Dynaco/Scott,etc....
$40.00 each
Prices are in Canadian dollars

ALSO FOR SALE: Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
ALSO FOR SALE: Vintage Electrohome UltraLinear 6BQ5B / 7189 MONO TUBE POWER Amplifier FOR SALE

ALSO FOR SALE or TRADE: Selling vintage 1960 - 70's single 5963 + many other tubes
Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
FOR SALE: Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
Asking Price:
CAD $40.00


4 x Marconi 6AV5 GA Output tubes @ $80.00 for all 4 tubes including shipping to anywhere in Canada!

EMT / Canada Post money orders or cash
If Paypal +4%

Local GTA pickup also welcomed.
Accepted payment is by; Cash / EMT Interac Transfer / Canada Post money gram or orders
No exchange or refunds
Thanks most kindly for looking!

*Also have several 35W4 and 35Z5 GT half Wave Rectifier Tubes @ $12.00 each or trade ???

35Z5GT/G @ The Valve Museum
www.r-type.org/exhib/aaa0889.htm

Jun 01, 18 10:27am
Best offer or trade:
4 x Marconi 6AV5 GA Output tubes @ $80.00 for all 4 tubes including shipping to anywhere in Canada!


Also have some NOS/NIB Vintage RCA EZ81 / 6CA4 rectifier tubes (Never used)
All tubes are in the original boxes NOS NIB.
Vintage 6CA4 (EZ81) rectifier tubes for amps like Eico, Scott, Dynaco
All tubes test as new with no leaks or shorts
Each tube = $40 + shipping
All test very strong like new (never used)
All tubes test as new with no leaks or shorts
These are getting a little harder to find now especially New Old Stock
These are good for Eico/Dynaco/Scott,etc....
$40.00 each
Prices are in Canadian dollars

ALSO FOR SALE: Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
ALSO FOR SALE: Vintage Electrohome UltraLinear 6BQ5B / 7189 MONO TUBE POWER Amplifier FOR SALE

ALSO FOR SALE or TRADE: Selling vintage 1960 - 70's single 5963 + many other tubes
Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
FOR SALE: Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
Vintage NOS/NIB RCA EZ81 - 6CA4 tube rectifiers + many other vintage tubes
Asking Price:
CAD $40.00


4 x Marconi 6AV5 GA Output tubes @ $80.00 for all 4 tubes including shipping to anywhere in Canada!

EMT / Canada Post money orders or cash
If Paypal +4%

Local GTA pickup also welcomed.
Accepted payment is by; Cash / EMT Interac Transfer / Canada Post money gram or orders
No exchange or refunds
Thanks most kindly for looking!






Cash, EMT, Canada Post Money orders preferred
PayPal + 4%
1-4 tubes are the same $19.00 shipping cost by Canada Post regular parcel service at buyer's expense
*All orders of $160.00 or more will be shipped Free to anywhere in Canada!


Time to clear out some more tubes!

12AT7 / 12AU7 Tubes BALDWIN / GE / PHILIPS / RCA / ROGERS / SYLVANIA / WESTINGHOUSE

mostly from $25.00 each

Also some vintage 1960-70 tubes:

12AU7 Tubes

12AT7 Tubes

12BY7 Tubes

12AU6 Tubes

12AV6 Tubes

12AT6 Tubes

12BA6 Tubes

12BEG Tubes

12BY7 Tubes

From $25.00 each


The 12AU7, 12BH7, and 6CG7 have very similar electrical characteristics and can usually be substituted for each other.

12AU7 is identical to a 6CG7 electrically and in the circuit it will function identically. However, there is a different heater pin out.
So if you are substituting you need to make a change.
In addition, the 6CG7 draws twice as much heater current so be sure that this will work in your circuit. (This may be one reason it is not as popular as it should be.)

12BH7 requires no circuit modification to substitute for a 12AU7, but the plate resistance is a little lower (5300 vs 7700).
Thus, even though it has a lower u (or amplification factor), the gain may be slightly higher depending on the circuit design.
[This is mainly true for circuits that use an anode resistor load.]
It will also draw a little more current, but the 12BH7 is a beefier tube and can handle it.
For most circuits this should be well within the tolerances of the design, but you can ask the manufacturer to be sure.
With respect to audio reproduction there is a fairly large difference between these three tubes.
The 6CG7 (or 6FQ7 which is the same exact tube) is identical in internal construction to the 6SN7. The 6SN7 has the reputation of being the most linear of the medium mu triodes and the 6CG7 follows suit.
Also, the 6CG7 line is remarkably similar in audio performance across various manufacturers of the same vintage or age.
It is a good tube for early or middle stage amplification and has the added bonus of a grounded shield between sections, which reduces hum and increases channel separation.

The 12BH7 can lend a wonderful life to the tone that sounds great for jazz or vocals. For audio listening, this tube can temper the harshness of CD's.
There is, however, a wider variation in the sound of 12BH7s than 6CG7s, so some tube selection or rolling is in order.
You can find very neutral 12BH7s (watch for a coming blog comparing them) . If you don't want to modify the circuit and are unhappy with your 12AU7--this is a good choice.

The 12AU7 family has the widest variety of tonal characteristics which is probably why this tube is rolled so often by audiophiles.
Personally I find some 12AU7s a little tinny in comparison with the 12BH7 and 6CG7, but there are exceptions,such as RCA clear tops and 5963 tubes!

Part of the fun and magic of tubes is rolling them when listening to different types of music.

All single tubes from $20.00 each
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders
Paypal + 4


**Please read my CAM profile re: shipping policies


Many vintage pairs of 12AT7 + and 12BY7 tubes @ $50.00 a pair!

HP-AMPEREX*G.E.*PHILIPS*RCA*ROGERS*SYLVANIA*WESTINGHOUSE

All tubes have tested very good!
No leaks or shorts

Many pairs of 12AT7 + 12BY7 vintage tubes available

If you are going to roll pairs in your Amp / Pre amp then these are the tubes for you!

All testing very good and most were never used and as good as new!

Also have matching pairs of:

A pair of 12AU7-----60.00
A pair of 6ML8------35.00
A pair of 6AN8------ 60.00
A pair of 6BL8-------35.00
A pair of 6AU8-------35.00
A pair of 6GH8-------35.00
A pair of 6U8A-------35.00
A pair of 6AT6A----- 35.00
A pair of 6AT8A----- 35.00


I also have many more tubes then I need
Most of these tubes for vintage amps,pre-amps,tuners testers and other vintage gear. All tubes have been recently tested using a Jackson 658 tester,and all these have no leaks/shorts!
All tubes are NOS,some are also NIB
Kindly email me for any information and for prices.


Current updated list of available tubes:

0B2 Philips Mini Watt
0C3
4BQ7A
6AQ5
6AQ8
6BQ7A
6BQ5/EL84
6AX8
6BN6
6AU6
6AV6
6BN4A
5763
5963
6H1N
6C4
6X4
6X9
6X8
6AL5
6AK6
6AN8A
6AU8A
6CY5
6CG7/6FQ7
6AT8A
6U8A
6GH8A
6SN7
8X9
ECH81
12BY7A
12BA6
12BE6
12AU7
12AT7
12SN7
GB-5726
6BN8
6BG6GTB
6CU6
12AH7GT
EF86
EF89
6DA6
13EM7
7591A
50BM8
UCL82 ROGERS
6J6 / ECC91 / 6N15P RUSSIAN NOS
JAN 0A3 WESTINGHOUSE NOS
JAN 0C3 VR105 NOS


Local GTA Toronto pickup welcomed.
Shipping is by Canada Post regular parcel
All orders of 4 or more tubes is free to anywhere in Canada!
All tubes will be properly well wrapped,packed and bubble-wrapped boxed.

If you are going to roll pairs in your Amp / Pre amp then these are the tubes for you!

Also we have these 12AT7 RCA Black Plate tubes are designed to be used as an amplifier or it can be combined as an oscillator and mixer
(as long as the frequencies are below 300MHz.)
The RCA brand are the higher quality tubes.
The 12AT7 has a mu factor of 60.
Each triode section of the tube acts as a class A amplifier.
Because of this, the tubes can be used in microphone preamplifiers, instrument amps, and recording equipment that is equipped with vacuum tubes. The tube features a double triode with separate cathodes, and because of their design, they are low noise.
They requires a noval nine-contact socket, but can be mounted in any position.
Nice and quiet,excellent tone, dynamics and clarity!
Test strong!

3 x General Electric 6414 Tubes
The 6414 tube is an industrial/military upgrade, computer rated dual triode,virtually the same specs as the E180CC or 7062.
Unlike the E180CC, this tube was made in the USA.
It is a more rugged build, with black plates,triple mica and military ratings.
They operate correctly with a +/- 20% variation in filament voltage.
This tube is also like a 12AV7 and will work wonders in any 12AT7 spot!
It may be just the ticket if you want to boost the gain of a 12AU7 circuit.
The 6414 is getting very hard to find, but with a 10,000 hour heater rating you may never need a replacement.
Discussion groups rate this type very highly for use in headphone amps.
Stands about 1/2 inch taller than the standard 12AT7

The 6414 has 2/3 the mu and 2/3 the plate resistance, takes 50% more heater current, is rated for no more than 2/3 the maximum voltage and 2/3 the maximum plate dissipation.
The maximum of 200 plate volts

There are two triodes in the 12AT7.
The plate of the 12AT7 triode that is in the shunt regulator runs at 350V.
The plate of the second triode that works as the input stage and couples to the output tube grid sits at around 195V.

Branded Baldwin organ grade 12au7 white and yellow print organ grade very musical tubes!
All have been tested with a B+K calibrated tube tester
Baldwin organ grade vacuum tubes
$50 a pair
$90 a quad
White stamped labels
All tested and fully operational.
Super Strong!.
Including shipping to anywhere in Canada

The 12AU7 is a miniature medium-mu twin triode.
This tube finds use as a phase-inverter/splitter in push-pull amplifier circuits in ac/dc radio equipment and in many diversified applications such as multivibrators or oscillators in industrial control devices.
The tube is quite pokey and sections can even be connected in parallel to create a power amp with enough current to drive a pair of headphones or even a guitar speaker.
A centre tapped heater permits operation of the tube from a 6.3V or a 12.6V heater supply.
The tube requires a noval nine-contact socket and may be mounted in any position.

DOUBLE TRIODE (separate cathodes)
Heater Voltage 6.3-12 V
Heater Current 300-150 mA
Plate Voltage 250 V
Plate Current 10.5 mA
Plate Resistance 7700 Ω
Amplification Factor (μ) 20
Plate Dissipation (max) 2.75 W
B9A pinout

Also have many top of the line variants 12AU7 / ECC82 tubes
5814A / 6680 / 6189 /6189 / 5963 tubes are all an upgrade/military grade variants of 12AU7's
G.E / Heathkit / RCA / JAN ROGERS / TUNG-SOL / WESTINGHOUSE
All test very strong
No shorts or gas leaks!
Price is $60.00 a matched pair!
Shipping to anywhere in Canada is available
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders


ATTENTION all CAM member tube shoppers...
Finding the right tube for your amp/pre amp,you will find that there will be a lot of different opinions ....
Many times all the answers are right.
The complications can be is some tubes can be very system dependent so it will depend on your system as to which tubes sound the best.
We all desire quiet nice sounding tubes.
Why are some tubes noisier then others,or quieter in certain amps and not in others?
Audio tubes need to settle in and then will get better once burned in.
Definitely buy from a reputable dealers!
If you're going to be into tubes, its always beneficial to develop a relationship with dealers you can trust.
If you want to find the best sounding tube for your system and don't mind spending $$, then buy several brands/types and listen for yourself.
Each brand tends to feature characteristics that may appeal to you and match well with your unit, others not so much so there really isn't one 'best-sounding' tube out there as its very dependent on the application.
Also, while these super rare and uber-expensive tubes do sound great, they're best implementation is in sensitive pre amps and phono stages Remember, a good portion of their cost can be attributed to their scarcity, not just their sonics.
They really don't stand out in the usual amplifier's driver stage and in most other gear, a similar but substantially more common NOS tube of the same manufacturer will provide all but maybe the last 1% of the sonics of the super tubes at a much lower price.
Although improving, still many of the new tubes made today in Europe, China and Russia only reproduce random varied harmonics.
This can be why most of us upgrades to a vintage made tube made decades ago when these rare inner earth metals were available in the inside construction of the vintage tube.
These metals have become too expensive to use and today’s tube makers have found cheaper substitutes which seem to work but do not reproduce all the nuances and textures in music! ...

Clearing out many assorted brands of vintage 1950 -60's
ECC82 / 12AU7 + ECC83 / 12AX7 ECC81 / 12AT7 tubes
Black + Grey Long/Short Plates are available
Mostly are G.E. / Marconi / Raytheon / RCA / Sylvania / Westinghouse
Both short or long grey + black plates are available.
Test strong like new with very closely matched sections.
All have had very little use.
Lettering and logo prints are all excellent!
All these vintage tubes still do test very strong, like new /very close!
All tubes have been tested twice on my mutual conductance calibrated B+K tester
They will test at or close to new.
No gas leaks or shorts.
Each shipped tube is bubble wrapped and well boxed!
Price is @ $25.00 per tube !
Cash, EMT, Canada Post Money orders preferred
PayPal + 4%
1-4 tubes are the same $19.00 shipping cost by Canada Post regular parcel service at buyer's expense
*All orders of $160.00 or more will be shipped Free to anywhere in Canada!


Payable by Cash, EMT-Interac, Canada Post Money Grams
PayPal +4%
Buyer pays for shipping all orders under $159.99
Seller pays for shipping on all orders $160.00 or more!


Bubble wrapped and boxed to allow most securely packaged for safe arrival.
Tested on my B+K tube tester with all good strong readings
No gas or shorts
GTA Toronto CASH pick-up is always welcome!

Shipping available at buyers expense which usually is $20.00/Quad to anywhere in Canada
Payment is only by;Cash,Canada Post money gram/orders,EMT/money transfers are preferred.
For shipping +$20.00 to anywhere in Canada on all orders less then $160.00
*Free shipping on orders of $160.00 or more!

All testing very good and most were never used and as good as new!
Tubes are bubble wrapped and securely well packaged for shipping!
Payment is only by;EMT Interac money transfers, Cash,Canada Post money gram/orders
For shipping add $18.00 per packed parcel
Free shipping is included to any where in Canada with any purchase of $160.00 or more!
**Please read my CAM profile re: shipping policies



Local GTA pickup also welcomed.
Accepted payment is by; Cash / EMT Interac Transfer / Canada Post money gram or orders
No exchange or refunds
Thanks most kindly for looking!

Aug 05, 18 5:30pm
THE 5963 IS A MEDIUM-MU TWIN TRIODE. 9—PIN MINIATURE TYPE



Very little is written about these 5963 tubes.

It's practically today unknown, yet these are excellent fantastic replacements for 12AU7 tubes!

Smooth and sweet,yet bargain priced compared with many European brands!

Very smooth tube from top to bottom with no weakness!

These are a nice industrial/military upgrade variant type which is nearly identical to the standard 12AU7.

RCA made a nice black plate version of this tube
The 1950’s RCA 5963 sounds more dynamic than the standard 12AU7 Blackplate

It’s also a very good low-noise tube.

Sylvania has a gold pin version, and GE has it in their 5-star broadcast line.
The plate voltage rating is a little lower than for a 12AU7, but for most applications, it will work fine.
It has a rugged cathode and should be quite long lived, similar to the 5814.
That specially-designed cathode is said to withstand long periods of time in cut-off without damaging the tube (cathode poisoning).
This made them a great choice for NORAD computers, which led to a good supply of them on the USA West Coast.
Use them and you will marvel at the quality and value.
They are dead-silent and seem to have an unusually long lifespan.
Very satisfied with the sound they produce.
A truly fine 12AU7 variant from the 1950's, many tube audiophiles feel these can outperform most other NOS 12AU7 tubes!
In computer (and some other) service, tubes were quite often operated as switches, biased to cutoff (no plate current) for long periods of time and then turned on, while always the heater and cathode were warmed up and ready to go.
In ordinary tubes, this leads to a condition known as "cathode interface resistance" or "sleeping sickness."
The cathode interface is a layer of metal, usually nickel, between the cathode sleeve and the oxide coating that emits electrons. In ordinary tubes, under conditions of long-duration tube cutoff, it generates a growing resistance until at last the cathode "goes to sleep."
Computer tube cathodes were specially treated to survive those long periods of cutoff without developing cathode interface resistance



[PDF]5963
www.r-type.org/pdfs/5963.pdf


[PDF]5963
https://frank.pocnet.net/sheets/049/5/5963.pdf



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1 Premium User FOR SALE or TRADE: Quantity of vintage 1960's 12AX7/12AU7/12AT7/12AT6/12AV6/12AU6/12BA6/12BE6/12BY7/12BH7 + many more t Vacuum Tubes - Valves $15.00 ON Sep 01, 2018

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