11 RCA 6D6 Vacuum Tubes Valves Gray Glass Lot of Eleven Type 27 By Brand They are slightly microphonic

They are slightly microphonic

OEM-BRANDED black glass 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

gray ladder-plates

new in box RCA 12AJ6 tube tested to spec on our Paul Hart-calibrated TV7/U

11 RCA 6D6 Vacuum Tubes Valves Gray Glass Lot of Eleven Type 27 By Brand They are slightly microphonicThese 11 RCA gray glass 6D6 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured (from left to right, top to bottom) 39, 43, 44, 45, 46, 48, 56, 56, 58, 60 and 60 where minimum (65%) is 40. 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