Matched Quad General Electric GE 6CL6 Vacuum Tubes Valves Black Plate NOS NIB November 16 2023 Three of these tubes are

Three of these tubes are available initially in this Dutch Auction

Transconductance measured 59 for Tube One and 60 for Tube Two where minimum (65%) is 40

Tube One measured 80 while Tube Two measured 82 where minimum (65%) is 46 and 100% is 71

but for those of us who were around in the latter third of the ‘70s

It measured 58/56 where minimum (65%) is 40/40 and 100% is 62/62

Matched Quad General Electric GE 6CL6 Vacuum Tubes Valves Black Plate NOS NIB November 16 2023 Three of these tubes areThis matched quad of new old stock, new in box GE black plate 6CL6 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured (From left to right): 48, 49, 50 and 50 where minimum (65%) is 30 and 100% is 46. 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