General Electric GE 6U8 6U8A 6AX8 5KD8 6KD8 ECF82 Vacuum Tube Valve NOS NIB Facades Suites excellent silkscreening and 312 132

excellent silkscreening and 312 132 provenance/date codes

These tubes have steel plates

42/44 and 45/46 where minimum (65%) is 33/33 and 100% is 51/51

new in box milspec Sylvania JAN-0A2WA tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

Both tubes measured 30 where minimum (65%) is 22

General Electric GE 6U8 6U8A 6AX8 5KD8 6KD8 ECF82 Vacuum Tube Valve NOS NIB Facades Suites excellent silkscreening and 312 132This new old stock, new in box GE 6U8A (ECF82 6AX8 5KD8 6KD8) pentode triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 96 78. Minimum (65%) is 57 57 and 100% is 88 88. As I write, I am playing it using an adapter (not included) in our Dynaco Stereo 70. It sounds great with Pink Floyd's "Obscured By Clouds," replicating this album's nuances and dynamic range with