Sylvania 12AV7 Vacuum Tube Black Plate NOS-Testing Sylvania NOS-Testing new in box RCA RCA
$10.88
Description
new in box RCA RCA 3AT2 / 3AT2B / 3AW2 tubes tested to spec on our Paul Hart-calibrated TV7/U
Tube One measured 1940 micromhos
This trio of RCA black plate 12AU7A / ECC82 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts
perforated plates
Sylvania 12AV7 Vacuum Tube Black Plate NOS-Testing Sylvania NOS-Testing new in box RCA RCAThis new old stock testing Sylvania 12AV7 dual triode was tested on our Jackson for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 116% 104% where minimum (65%) is 70% 70%. This tube has black plates; a horseshoe getter and terrific flashing. I am playing it in Bottlehead Crack headphone amplifier as a 12AU7 substitute and it sounds excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE
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