Matched Pair Canadian General Electric GE 12SN7 12SN7GT Vacuum Tubes Valves Black Plate NOS NIB 7476 7676 7676 It is a faithful transfer

It is a faithful transfer of the 78 sources and

These five RCA 5763 tubes tested as follows on our Paul Hart-calibrated TV7/U:

wing-plates

new in box Realistic (Radio Shack) Gold Clad 6AK5 tube tested to spec on our Paul Hart-calibrated TV7/U

Two are GEs and the third is a Tung-Sol

Matched Pair Canadian General Electric GE 12SN7 12SN7GT Vacuum Tubes Valves Black Plate NOS NIB 7476 7676 7676 It is a faithful transferThis new old stock, new in box matched pair of Canadian GE black, T plate 12SN7GT dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One: 83 84 Tube Two 85 86 These tubes have steel support rods; black T plates; rectangle top mica spacers with chevrons; D getters and short bases. I am playing them as I write in my Alan Eaton single ended triode