Tung-Sol 12AV7 Vacuum Tube NOS NIB For Your Bottlehead 76 Seventysix This lot of four Sylvania

This lot of four Sylvania 12Q7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

gray and silver bottles

new in National Union 1625 / VT-136 tested to spec on our Paul Hart-calibrated TV7/U

milspec Raytheon 5Y3GT / JAN-CRP-5Y3GT/G / VT-197A rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

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

Tung-Sol 12AV7 Vacuum Tube NOS NIB For Your Bottlehead 76 Seventysix This lot of four SylvaniaThis 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