SKU:15936594059
RCA 12AV7 Vacuum Tube NOS NIB Black Plate For Your Univalve
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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 28 - Oct 3
Description
RCA 12AV7 Vacuum Tube NOS NIB Black Plate For Your UnivalveThis new old stock, new in box Sylvania 12AV7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 41 42 where minimum (65%) is 21. This tube has black plates; a horseshoe getter; terrific flashing and ACS date codes. I am playing it in Bottlehead Crack headphone amplifier as a 12AU7 substitute and it sounds fine. WE HAVE SCORES OF THOUSANDS OF VACUUM
clear recording with sparkling highs and nice bass
Tube One measured 55 while Tube Two measured 60
Transconductance measured 35 for Tube One and 36 for Tube Two where minimum (65%) is 25 and 100% is 38
42 and 44 where minimum (65%) is 25 and 100% is 38
new in box RCA 6H6 tube tested to spec on our Paul Hart-calibrated TV7/U
new in box RCA 45Z3 tubes tested to spec on our Paul Hart-calibrated TV7/U
Two are National Union and there are one each of GE and RCA
enormous bottom
They measured 36 and 37 (RCA-LABELED
and bright
44/50 and 52/50 where minimum (65%) is 40/40 and 100% is 62/62
They measured 59
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