Matched Pair General Electric GE 6CL6 Vacuum Tubes Black Plate NOS-Testing VT107A Sixsnsevengt new in box GE 25BK5

new in box GE 25BK5 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Raytheon 5AM8 tubes tested to spec on our Paul Hart-calibrated TV7/U

These are ultra-low-noise

75 out of 10

Matched Pair General Electric GE 6CL6 Vacuum Tubes Black Plate NOS-Testing VT107A Sixsnsevengt new in box GE 25BK5This new old stock testing matched pair of GE black plate 6CL6 tubes were tested on our Paul Hart calibrated TV7 7 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 52 and 53 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