Matched Pair Sylvania Black Plate 6CL6 Vacuum Tubes 26HU5 NOS NIB Transconductance was 1900 for Tube

Transconductance was 1900 for Tube One and 1800 for Tube Two where new/nominal is within one standard deviation of 1900

This pair of Tung-Sol type 76 triodes was tested on our Paul Hart-calibrated TV7/U for shorts

This almost-perfectly-matched pair of Sylvania black plate 6C4 triodes was tested on our Paul Hart-calibrated TV7/U for shorts

(New 6CG7s typically test from within a half standard deviation of 2600)

new in box set of US-made octal tubes for your All-American Five set that requires the following:

Matched Pair Sylvania Black Plate 6CL6 Vacuum Tubes 26HU5 NOS NIB Transconductance was 1900 for TubeThis matched pair of Sylvania black plate 6CL6 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas.. They measured 44 and 48 where minimum (65%) is 30. 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 NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST