Matched Pair RCA 5763 Vacuum Tubes Valves June 04 2025 and their top mica spacers

and their top mica spacers have two X patterns incised into them

These tubes have shiny

I have played it (with an adapter) in one of my AC-heated Sound Craftsman RC2 amplifiers and it sounds great

These new old stock

new in box RCA 6H6 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair RCA 5763 Vacuum Tubes Valves June 04 2025 and their top mica spacersThis matched pair of RCA gray plate 5763 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 44 and 48 where minimum (65%) is 35 and 100% is 54. These tubes have gray plates and nice 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