Matched Pair General Electric GE 6K6 6K6GT Black Plate Vacuum Tubes Duodecar Japan new in box RCA 6BK7B

new in box RCA 6BK7B tube tested to spec on our Paul Hart-calibrated TV7/U

This Hytron JAN-CHY-12SN7GT milspec dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

wire or mica snubbers (for low microphonics) and excellent flashing

They have matte

This lot of three Philco 25Z5 tubes were tested on our Paul Hart-calibrated TV7/U for emissions

Matched Pair General Electric GE 6K6 6K6GT Black Plate Vacuum Tubes Duodecar Japan new in box RCA 6BK7BThis matched pair of GE 6K6 6K6GT tubes was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 36 volts for shorts, gas, plate current and transconductance. There were no shorts or gas. Tube One measured 2000 micromhos, 24. 2 milliamps' plate current. Tube Two measured 2160 26. 6. New nominal is within one standard deviation of 1900. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE