Matched Pair RCA 5763 Vacuum Tubes Valves June 04 2025 new in box RCA 6H6

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

This windup ladies' gold-anodized Acqua (Timex's equivalent of Tudor) watch keeps fairly-good time and has never been serviced to my knowledge

It is dead quiet when the preamp is muted and has excellent frequency response and sound-staging

These new old stock

likely Tung-Sol-MANUFACTURED) measured 31 while Tube Two (no silkscreening 6AK5-LABELED

Matched Pair RCA 5763 Vacuum Tubes Valves June 04 2025 new in box RCA 6H6This 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