Classic Currents
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(1) Tested Balanced CBS 6SN7GTB Tube with Original Box.
Date Code 6048.
Balanced mutual conductance (Gm) with a side round getter and 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 = 2750-2750 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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