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Classic Currents

(1) Tested Raytheon 6SN7GTB Tube Japan Tall Bottle Wide Gray Plates Code Q48 6SN7 GTB

(1) Tested Raytheon 6SN7GTB Tube Japan Tall Bottle Wide Gray Plates Code Q48 6SN7 GTB

Made in Japan

$24.95 USD
$24.95 USD
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(1) Tested Raytheon 6SN7GTB Tube.
Date Code Q48. Made in Japan.

Tall bottle style envelope with a top round halo getter and wide gray ladder plates.

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

Gm Test = 2875-2750 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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