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FOR SALE or TRADE: 12AT7 / 12BH7 / 12BY7 Tubes

Item #649297865
Info: 12AT7 / 12BH7 / 12BY7 Tubes

Asking Price:
CAD $25.00
Payment method: Cash, Money Order, Money Wire, Interac/EMT
Condition: 8 - Very good (?)
Date Posted: Sep 03, 17 7:16am (PST)
Edited: Sep 03, 17 7:16am
About Seller: David Dov
David Dov is a premium user
North York,Toronto, ON
Canada
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I was informed by a moderator I cannot sell tubes individually unless I post a price for each.
So let's try it this way
Large lot of tubes for sale or trade
Will also sell individually.
Let me know what tube you require.


Best offer for all 48 available tubes!


6 x 12BY7 Tubes @ $20.00 each

6 x 12BH7 Tubes @ $30.00 each

12 x 12AT7 Tubes @ $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.
I personally find some 12AU7s a little tinny in comparison with the 12BH7 and 6CG7, but there are exceptions,such as RCA clear tops.

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
No Paypal


**Please read my CAM profile re: shipping policies



Additional Information:

Sep 13, 16 11:56am
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:

6AQ5
6AQ8
6BQ7A
6BQ5/EL84
6AX8
6BN6
6AU6
6AV6
6BN4A
5763
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
0B2
6BN8
0C3
6NS7GT
0B2 Philips Mini Watt
6BG6GTB
6CU6
12AH7GT
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.

*All my tubes are guaranteed 100%!!!
Full money back guarantee!!!
(less shipping)

Thanks for looking.



Includes:

**Please read my CAM profile re: shipping policies



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