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(1) Tested Delco 12AU7 Tube 12AU7 Medium Mu Twin Triode Vacuum Tube

(1) Tested Delco 12AU7 Tube 12AU7 Medium Mu Twin Triode Vacuum Tube

Tested and Guaranteed

$14.95 USD
$14.95 USD
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(1) Tested Delco 12AU7 Tube.

The wording is partially worn off but is still recognizable as being Delco branded.

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

Gm Test = 1950-2250 micromhos
Minimum pass/good = 1400-1400

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