Trio RCA Gray Glass 12BY7 12BY7A Vacuum Tubes Valves 6AR6WA Milspec This matched-pair of GE 6AU6A

This matched-pair of GE 6AU6A tubes was tested on our Paul Hart-calibrated TV7/U tube tester for shorts

These seven new old stock

new in box RCA 6BK4 / 6BK4A tubes tested to spec on our Paul Hart-calibrated TV7/U

This new in box JJ 6BQ5 was tested on our Maxi-Matcher with 325 volts on the plates and a bias of -14 volts for shorts

Trio RCA Gray Glass 12BY7 12BY7A Vacuum Tubes Valves 6AR6WA Milspec This matched-pair of GE 6AU6AThis trio of RCA gray glass 12BY7 12BY7A tubes was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 55 while Tube Two measured 60. Tube Three measured 62. (Minimum (65%) 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 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED