Matched Trio Sylvania 12BY7 12BY7A Vacuum Tubes Cunningham Type This RCA 6S8GT tube was

This RCA 6S8GT tube was tested to spec on our Paul Hart-calibrated TV7/U

7 and 1830/20

Tube Two measured 3120/27

This JJ 12AX7 / ECC83 / ECC83S dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

108/77 and 115/84

Matched Trio Sylvania 12BY7 12BY7A Vacuum Tubes Cunningham Type This RCA 6S8GT tube wasThis matched trio of Sylvania 12BY7 12BY7A tubes was tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 54 while Tube Two measured 57. Tube Three measured 58. (Minimum (65%) is 46. 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