Matched Pair RCA 5763 Vacuum Tubes Sylvania 12AV7

Matched Pair RCA 5763 Vacuum Tubes Sylvania 12AV7This perfectly matched pair of RCA gray plate 5763 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 44 and 44 where minimum (65%) is 35. These tubes have gray plates and nice flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF

5 amps for their filaments as compared to

top mica spacer and a bottom

There were no shorts or gas and it tested as follows:

new in box RCA 1AC5 tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

but the bottle is firmly-cemented to it and there is no movement at all possible

This is a new old stock

(New US-made 6V6s typically test with plate current from the mid-teens to mid 30s with transconductance from 2300 micromhos or so

This lot of six GE 6AC7s was tested on our Paul Hart-calibrated TV7/U for shorts

new in box US-made 12K7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

I have listened to all four LPs

36 and 48 where minimum (65%) is 29

new in box RCA 6E5 magic eye indicator tube is nice and bright