> Classifieds > > > Philips Amperex made branded Electrohome 12AX7 / ECC83 / 7025A tubes @ $100.00 / matched pair!

FOR SALE: Philips Amperex made branded Electrohome 12AX7 / ECC83 / 7025A tubes @ $100.00 / matched pair!

Item #649366259
Info: Philips Amperex made branded Electrohome 12AX7 / ECC83 / 7025A tubes @ $100.00 / matched pair!

Asking Price:
CAD $100.00
Payment method: Cash, Money Order, Money Wire, Interac/EMT
Condition: 9 - Excellent (?)
Date Posted: Apr 09, 18 11:49am (PST)
About Seller: David Dov
David Dov is a premium user
North York,Toronto, ON
Canada
[other classified ads]
Product Brand: Electrohome
Product Model: ECC83 / 12AX7
Feedback Received: 579 1  See details
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Philips Amperex 12AX7 / 7025A tubes stamped Electrohome
ECC83 / 12AX7 ELECTROHOME TUBES:
161 - I65
AY
A6

-short grey ladder plate,
-round top getter.
-4 ridges/seams at the top of the tube
-They are the I65 type,
-Made in the early !960's

These Philip Electrohome I65-type tubes are some of the best sounding 12AX7’s ever made.
They are famous for their solid bass, warm mids, and fabulous highs!
These are a perfect choice for complimenting great phono stage
Tubes look exactly like the Electrohome pictured.

They do not have the the stamped bugle boys logo, however this was common during this period of rebranding at the factory.
Electronic companies deceived the pubic by saying stuff like "use only genuine Zenith tubes" etc. Inked production number says AY
PHILIPS AMPEREX ELECTROHOME 7025A / 12AX7 Tubes which is the low noise version of a 12AX7

EMT or cash preferred

All great tested readings of:
1250/1250
1250/1275
1225/1200
1200/1250

They all tested very strong and no gas leaks or shorts

These Philip Electrohome I65-type tubes are some of the best sounding 12AX7’s ever made.
They are famous for their solid bass, warm mids, and fabulous highs!

Tubes look exactly like the Electrohome pictured.
They do not have the the stamped bugle boys logo, however this was common during this period of rebranding at the factory.
Some electronic companies deceived the pubic by saying stuff like "use only genuine Zenith tubes" etc. Inked production number says AY
PHILIPS ELECTROHOME 12AX7 / 7025A

Code: I65
Identified by:
- ring getter
- similar to Heerlen I65 tube

Philips Amperex was an American company that re-labeled tubes from many sources.
Many were from Heerlen, Holland (with a delta-shaped factory etch code)
The Bugle Boy 12AX7 was made in the Heerlan factory.
There were at least five different distinct variations of that tube type, depending on the date of manufacturing.

Tube aficionado's know these tubes to be and sound among the best ever made!!!!

These tubes have most quiet, low noise distinct sonic characteristics and sound very good, no modern current made tubes are quite as good as these vintage tubes!

Philips owns Amperex and made + sold tubes stamped-branded Electrohome which bought tubes from Phillips, and the tubes they used are the same design, and had the same final testing as Amperex, Philips or Bugle Boy tubes.

These are early 1960's Philips Amperex 12AX7 / 7025A "hi fi" low noise version of the 12AX7.
All other specifications are the same as 12AX7.
Some of these tubes were factory doubled stamped marked with 12AX7 and 7025 both
These are special non-microphonic and low hum, noise version of the 12AX7
These are the Philip's Amperex made vintage 1960-64, branded Electrohome
These tubes were exclusively produced + tooled and built the exactly as Amperex Bugle Boys, being wholesaled in bulk by Philips only for the organ grade market offering "premium" version of the European (Holland) made 12AX7.

This is the "premium" version of the European 12AX7.
The "S" on the ECC803S means "select" version.
These are usually found on certain Amperex brand tubes only.
These have extra thick mica spacers and extra support rods to minimize microphonic response. Late versions produced by Philips/ECG did not perform as well as these older produced tubes did,and do!
Were not as well known as their brother Bugle Boys because they were only made for a few short years by Philips
All these Philips Amperex branded Electrohome, most are NOS,some used for 20 hours as burn ins.
All still test very strong like new, test results show all tubes 97% -120% on a calibrated B+K tube tester.
Tubes did not come in original boxes as they were sold in bulk to Electrohome for the organ grade markets
The $100.00 price is for a matching pair of these tubes including shipping to anywhere in Canada!
You could pay more......but these excellent tubes are available now @ $100.00 a matched pair!

Shipping is by Canada Post
Local Toronto GTA cash pick up is preferred.
For all GTA/Toronto and local buyers I have a good working B+K tube tester here,
or you can bring your tester/amp with you if you like, and test before you buy!


Founded in 1907, Electrohome was Canada's largest manufacturer of television sets (TVs) from 1949 to 1984.
The company was also involved in television broadcasting, and was a leader in data, video, graphics displays and projectors.
From 1984 to 1999, Electrohome-branded TVs were produced under licence by Mitsubishi Electric, and from 1999 to 2007 by Jutan (distributed by Canadian distributor Citizen Electronics).
The company underwent an orderly wind-up in late 2008. In February 2010, the Electrohome brand was acquired by Bluetronics Group a division of Circus World Displays Limited (CWD).
On March 5, 2007, the Redmond Group of Companies announced the purchase of Electrohome brands effective January 1, 2008. Later that month, on March 27, Synnex announced the purchase of the Redmond Group Electrohome assets.
In January 2008, Electrohome announced the sale of all of its trademarks to Synnex Corporation. Electrohome now derived most of its income from its licensing, minor stock holdings in Mechdyne/Fakespace Systems which provides visualization solutions for data analysis, and owns digital cinema firm Immersion Studios.
The company began an orderly wind-up in late 2008.
In February 2010, the Electrohome brand was acquired by Bluetronics Group, a division of Circus World Displays Limited (CWD). Also included in the purchase were the rights to Magnasonic, Secureguard and Citizen (Canada only) brands, amongst many others.
Based in Niagara Falls, Canada, CWD also owns and operates other brands including Fluance, Nyrius, Levana, SVAT, Defender and Pure Therapy

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! ...





Additional Information:

Apr 02, 18 12:47pm
Vintage Audio Tube Lots up for sale/trade
Many collected tubes over the years, are now available
As I'm clearing out/down the more then I'll need.
All the tubes have been tested, and only kept the ones testing strong / like new!
No gas leaks or shorts
Some are NOS / NIB


3 x ROGERS 7025 (Green print stamping) Made in Holland @ $50.00 each

Tube 1 Tests 1200/1200

Tube 2 Tests 1200/1250

Tube 3 Tests 1175/1200

3 x 12AX7 Telefunken ribbed tubes branded - labelled for Fisher @ $80.00 each
They have the diamond bottoms with matching date codes of OP.
They have been tested on a fully updated calibrated B+K tube tester
(Min 725 Max 1150)

Tube 1 Diamond Tests 1175/1200

Tube 2 Diamond Tests 1170/1250

Tube 3 Diamond Tests 1100/1100

*Includes FREE Shipping to anywhere in Canada by Canada Post
(Kindly note that both Saint Pierre and Miquelon although being very close to NFLD. are part of France and not Canada!)

Payable by Cash,Canada Post Money Order, EMT
If by Paypal + 4%.



Singles, Matched Pairs, and Quads.
My asking prices are fair.
Check my feedback and you will see I've sold many tubes to satisfied buyers.
Take a look and see if there's anything you might need.
Please email with your requests as I have many more tubes not listed.
Buyer pays shipping on sales under $160. or I'll cover shipping on all orders over $160.

Mostly NOS / NIB
6AL5 --$20. each
6AK6-- $20. each
6AB4 -- $20. each
6BA6 -- $20. each
6BE6 -- $20. each
6AU6 -- from $20. each,
6BL8 -- from $20. each or Mullards @ $50. each
6GH8 -- $20. each
6EA8 -- $15. each
EM84 -- from $25. each
6922 / 6DJ8 -- $25.each
12AU6 --$20.each
12AV6 --$20. each
12BA6 --$20.each
12AX4 -- $20. each
12BE6 -- $20.each
12BH7 -- $25 each
12BY7 -- $20. each
12AU7 -- from $25.each
12AX7 -- from $25.each
12AU7 -- from $25.00 each
5R4GY(Coke Bottle) --$55. each
5V4G --from $25. each
5V4GA--from $25.each
5Y4-- $25.each
5Y4G--from $25.each
5Y3GT--from $25..each


My asking prices are firm and fair.
Check my feedback and you will see I've sold many tubes to many more satisfied buyers.
Take a look and see if there's anything you might need.
Please email with your requests as I have many more tubes not listed.
Buyer pays shipping on sales under $160.
I'll cover shipping on all orders over $160.

All tubes have tested very strong on my calibrated B+K tester, and all are well within the very good range for filament continuance!
No gas leaks or shorts

See my other ads!
Please ask for further list and prices
Any purchases over $160.00 and shipping is free!
Shipping is by Canada Post
Local Toronto GTA cash pick up is preferred.
For all GTA/Toronto and local buyers I have a good working B+K tube tester here, or you can bring your tester/amp with you if you like, and test before you buy!


ATTENTION all CAM member tube shoppers...
Also have some very good 5963 tubes!
Just wait until you listen to all the types of 5963's.
It's 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

10 x G.E. short grey plates (1960's) @ $35.00 each
30 x RCA grey short plates (1960's) @ $35.00 each
30 x RCA black plates vintage(1950's)@ $40.00 each

Also have some Made-in the-USA, RCA 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) each
You can have them at $65.00 Cdn each.or $100.00/pair!

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




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!
6350: This tube was mainly manufactured for IBM and other computers in the late 1950s to mid 1960s. Sylvania and GE blackplates are considered the best of all with this tube. The only difference is the pins that correspond to the grid and plate of each triode are reversed from the 12AU7 connections, so you will either need to rewire your sockets to take this tube, or consult with the manufacturer of your unit to see if this tube can be used as a sub for the 12AU7. It has a mu or gain factor of 18 so is very close to the 12AU7. These were made to tight specs and carefully quality checked, since replacement in a computer of the day was difficult and costly, and the tubes were expected to operate 24-7. These make impressive upgrades to the standard 12AU7!
6680: Motorola and GE are the brands you find most often with this tube, but RCA made a nice cleartop version for a very short time. It is identical to the 12AU7, but has the added benefit of being able to withstand variations in filament voltage without affecting it’s output. This tube was designed originally for two-way mobile radio use. It makes a fine hi-fi 12AU7 tube as well. Never as plentiful as other types, this tube is rather scarce today.
7730: An excellent USA made industrial version of the 12AU7, produced mainly by CBS labs but I have seen it with other labels as well. This tube has thickly plated gold pins and was designed for critical aircraft and other exacting industrial applications. It has a long life heater, is extremely well balanced and a top choice for audio use. Very rare today.
ECC802: This is a premium version of the European ECC82, with matched triode sections. These are very rare in the USA, and often command very high prices.
E80CC/6085: This unusual European tube is basically an industrial type 6085. However, it’s specs are similar enough to a 12AU7 that audiophiles are grabbing them up while the prices are still reasonable. The heater life is rated at 10,000 hours, and some have gold pins. The larger box plate structure gives this tube low microphonics and silky smooth sonics. Some of the Philips Holland versions had the rare pinched waist, where the glass dips inward and actually molds around the top mica plate, giving the plates extra support and virtually eliminating microphonics. There is also a version made at the Amperex factory in Hicksville, NY, which is often priced lower but looks the same and sounds very similar to the Holland version. Since this tube has a much higher Gm and Mu factor than a 12AU7, the gain is going to be greater and this tube will give a more forward presentation. Awesome in phase splitter applications. If in doubt, check with your amp or preamp manufacturer to see if this tube will work OK in your application. This tube is also about twice as tall as a 12AU7, so installation space in your chassis is a consideration as well. These are out of production, rare, and getting very hard to find. The European types usually command the top prices, but U.S.A. types exist as the 6085 and should be a bit lower in cost, but they are also rare and climbing in price. Many U.S.A. tubes were actually made by the European factories, so watch for the 6085 U.S.A. brands!
B749: This is made by Genalex (Marconi-Osram Valve Co. of England) and is extremely rare in the U.S.A. The B749 is in the “Gold Lion” series of audiophile tubes, and has the gold lion and gold script on the glass. Inside it looks similar to a Mullard 12AU7, and has a red Genalex decal across the bottom. These are said to sound the best of all 12AU7 types, and this reputation, coupled with it’s overall scarcity, has driven the market price of this prize tube to extreme heights. Worth seeking out as these may be the first out-of-production classic European tube to go totally extinct over the next dozen years or so.



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