Matched Pair RCA 6AK5 Vacuum Tubes Steel Plate NOS NIB 6S8GT Grid Cap Delco-BRANDED 6SK7 tested as good

Delco-BRANDED 6SK7 tested as good on our Paul Hart-calibrated TV7/U

but also have much lower gain

GM-Delco-BRANDED 6AX8 tubes tested to spec on our Paul Hart-calibrated TV7/U

medium bottles

These seven 6A6 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair RCA 6AK5 Vacuum Tubes Steel Plate NOS NIB 6S8GT Grid Cap Delco-BRANDED 6SK7 tested as goodThis new old stock, new in box matched pair of RCA steel plate 6AK5 tubes was tested on our Paul Hart calibrated TV7 U tester for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 30 while Tube Two measured 32 where minimum (65%) is 22. I am playing them now in my Mini 2013 as I write and they sound excellent. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER