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Classic Currents

(1) Tested Sylvania 6SN7GTB Tube Chrome Dome Black Plates Date Code CC 6SN7GT

(1) Tested Sylvania 6SN7GTB Tube Chrome Dome Black Plates Date Code CC 6SN7GT

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(1) Tested Sylvania 6SN7GTB Tube.
Date Code CC.

Chrome dome envelope with black angled T plates.

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:

Gm Test = 2750-2875 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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