Hello – I have a matched pair of 1950’s RCA 12BH7A Black Plate tubes for sale.
These tubes have black ladder plates and tiny ‘D” getters.
TV-7/B test results: 65/60 and 65/60. Minimum is 38.
They have also been checked for noise and microphonics in the phono stage of my DIY pre-amp and are dead quiet.
All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice – prior to the listing and prior to shipping.
Please e-mail me at firstname.lastname@example.org if you have any questions or you may call me at 602-803-6290.
Please check out my other ad’s on Audiogon.
If you don’t see the tubes you are looking for, please contact me.
Be sure and click on the “other items’ link for more tubes.
I will ship international.
US and Canadian shipping is $6.00 and international shipping is $16.00.
Your tubes will be carefully packed.
No charge for paypal. I also accept money orders and personal checks.
Please check my feedback and buy with confidence.