Tung-Sol 12AV7 Vacuum Tube NOS NIB For Your Bottlehead 76 Seventysix They have great bass and

They have great bass and sparkling highs and Mann's voice is warm and clear as a bell

34/34 and 38/41 where minimum (65%) is 25/25 and 100% is 38/38

6 volts on the filaments

I will test it

Tung-Sol 12AV7 Vacuum Tube NOS NIB For Your Bottlehead 76 Seventysix They have great bass andThis new old stock, new in box Sylvania 12AV7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 41 42 where minimum (65%) is 21. This tube has black plates; an O getter; terrific flashing and a 3226104 3 provenance date code. I am playing it in Bottlehead Crack headphone amplifier as a 12AU7 substitute and it sounds fine. WE HAVE SCORES OF THOUSANDS OF