Matched Pair General Electric GE 12B4 12B4A Vacuum Tubes Valves 9ED4 T39 new in box Sylvania 9JW8

new in box Sylvania 9JW8 tubes tested to spec on our Paul Hart-calibrated TV7/U

PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHELEC" AND/OR CALL OR TEXT US AT 202-372-6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS

These eleven US-made number / type 27 tubes tested below the cusp -- some far below

Enhanced Cooling: no

Matched Pair General Electric GE 12B4 12B4A Vacuum Tubes Valves 9ED4 T39 new in box Sylvania 9JW8This matched pair of GE 12B4A tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 33 while Tube Two measured 34 where minimum (65%) is 32 and 100% is 49. Wish I could tell you how they sound, but I don't have any equipment that uses these. 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"