RCA 6AX5 6AX5GT Vacuum Tube Rectifier 12K7G This Sylvania 6BS8 tube tested

This Sylvania 6BS8 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 6KU8 tubes tested to spec on our Paul Hart-calibrated TV7/U

1-25 188-5 and 1-04 188-5 date/provenance codes

This 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

RCA 6AX5 6AX5GT Vacuum Tube Rectifier 12K7G This Sylvania 6BS8 tube testedThis RCA 6AX5GT rectifier tube tested 56 52 on our Paul Hart calibrated TV7 U where minimum (65%) is 40 40 and 100% is 62 62. It has a short base; a top D getter; a 56 35 date and excellent flashing. 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 FORMS OF SHIPPING