Matched Pair RCA Black Plate 5763 Vacuum Tubes 33GY7 Duodecar T52 Tube Three: 40/2120 and

Tube Three: 40/2120 and

They tested 51/52

Sperry-BRANDED (SPL) 6V6GT output tubes was tested on our Maxi-Matcher 2 in Real World conditions with 400 volts on the plates and a bias of -36 volts for shorts

Transconductance measured 49/56

excellent flashing and super-shiny pins

Matched Pair RCA Black Plate 5763 Vacuum Tubes 33GY7 Duodecar T52 Tube Three: 40/2120 andThis matched pair of RCA black 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 48 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 YOU DO