Sylvania 14AF7 Vacuum Tube Valve NOS-Testing February 16 2026 new in box RCA 6AS8

new in box RCA 6AS8 tube tested to spec on our Paul Hart-calibrated TV7/U

A seven out of ten

WE HAVE HAD FEWER THAN A DOZEN LESS-THAN-FOUR-STAR REVIEWS OR HAVE LOST A CUSTOMER BECAUSE I REFUSED TO EITHER ISSUE A REFUND FOR A TUBE THAT WENT BAD AFTER IT HAD BEEN USED OR A BUYER KNEW NOTHING ABOUT TUBE REBRANDING AND CLAIMED THAT SOMETHING MADE BY TUNG-SOL AND BRANDED BY EMERSON WAS MADE BY EMERSON

52 and 59 respectively

Sylvania 14AF7 Vacuum Tube Valve NOS-Testing February 16 2026 new in box RCA 6AS8This new old stock testing Sylvania 14AF7 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and it measured as follows: 51 49 where minimum (65%) is 33 and 100% is 51 51. 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