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

They measured 93/77 for Tube One and 95/78 for Tube Two

This Telefunken ECH81 / 6AJ6 was tested on our Paul Hart-calibrated TV7 for shorts

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

dimple sheet getter

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