Amperex ECC189 6ES8 Vacuum Tube For Your Schiit Concert Orchestra This Westinghouse 25AV5GT tube --

This Westinghouse 25AV5GT tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

Tube Two has a narrow crack in its base which

new in box RCA 6JN6 tube tested to spec on our Paul Hart-calibrated TV7/U

This lot of two RCA Cunningham Radiotron 2B7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Amperex ECC189 6ES8 Vacuum Tube For Your Schiit Concert Orchestra This Westinghouse 25AV5GT tube --This West German Amperex MANUFACTURED, RCA LABELED ECC189 6ES8 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured an outstanding and nearly perfectly balanced 92 93 where minimum (65%) is 50 50 and 100% is 77 77. This tube has steel support rods; an O getter and matte gray plates. As I write, I am playing Pink Floyd's Green Is The Colour" in my Schiit Audio Vali 2