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Classic Currents

(1) Tested Sylvania 6SN7GTA Tube Black Plates Chrome Dome Date Code AJ 6SN7 GTA

(1) Tested Sylvania 6SN7GTA Tube Black Plates Chrome Dome Date Code AJ 6SN7 GTA

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(1) Tested Strong Sylvania 6SN7GTA Tube.
Date Code AJ.

Chrome Dome getter flashing with angled black T plates and clear mica spacers.

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:
Gm Test = 2250-2125 micromhos
Minimum pass/good = 1650-1650

Further tested under real operating conditions on a Class A amplifier and exhibiting no microphonics.

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