General Electric GE 6U8 6U8A 6AX8 5KD8 6KD8 ECF82 Vacuum Tube Valve NOS NIB Facades Suites Both tubes measured 30 where

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

IF A TUBE FAILS AFTER YOU GET IT

These tubes have steel plates

new in box RCA 6U8A (ECF82 / 6AX8 / 5KD8 / 6KD8) pentode/triode was tested on our Paul Hart-calibrated TV7/U for shorts

excellent silkscreening and 312 132 provenance/date codes

General Electric GE 6U8 6U8A 6AX8 5KD8 6KD8 ECF82 Vacuum Tube Valve NOS NIB Facades Suites Both tubes measured 30 whereThis 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