Tung-Sol 12AV7 Vacuum Tube NOS NIB For Your Bottlehead 76 Seventysix milspec Raytheon 5Y3GT / JAN-CRP-5Y3GT/G

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

gray and silver bottles

There are a few pops and ticks

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

This Philco 1C77G tube tested to spec on our Paul Hart-calibrated TV7/U

Tung-Sol 12AV7 Vacuum Tube NOS NIB For Your Bottlehead 76 Seventysix milspec Raytheon 5Y3GT / JAN-CRP-5Y3GT/GThis 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