12BH7 tubes
12BH7A vacuum tube is a medium mu dual triode,
and is compatible with the ECC99, ECC81, ECC82, and ECC83 series of tubes,
but has slightly different characteristics.
The thin glass tube envelope is 19 mm in diameter,and is 68 mm tall.
12BH7 was designed as a TV frame output oscillator driver .
12BH7 Tube is capable of driving plenty of current with low distortion.
The construction is compatible with audio through to low VHF use.
This makes it ideal as a driver for power tubes in modern tube audio amplifiers.
12BH7A tube with suffix 'A' has a controlled heater warm-up for use in a series filament circuit.
In modern tube amps, there is no difference between the two.
You can use either 12BH7 or 12BH7A.
Since 12BH7 is a high current driver, the internal components are much bigger than other small-signal tubes like 12AX7. The larger plate boxes in 12BH7 house large cathode, which can emit more electrons.
The larger plate boxes in 12BH7 tubes are more prone to microphonics.
This is not an issue when used as a driver tube, but if your application calls for low microphonics, we recommend that you add a low noise screening
The 12BH7 is like a 12AU7, but has higher power handling capability.
Recommend to someone with a McIntosh tube amp,
an SVT or a headphone amp that uses them as output tubes.
In the first two cases, the 12BH7 is the only tube that'll do the job!
So it seems it would find a better home with folks who can't sub something in its place
Simply just plug and play! (and enjoy) the tone, headroom, vol, etc. is a lot better.
$55.00/Tube
$100.00 cdn/matched pairs
$190.00/ matched quads
On line sale
Payable please by Interac e-transfer (EMT)
Shipping is available to anywhere within Canada +$25.00 (1-8 tubes/order)
Free shipping anywhere within Canada on orders of $250.00 or more!
All prices and policies are firm please!
Best regards, stay safe and healthy with G-d's blessings!
