Matched Pair Tung-Sol 6K6 6K6GT Vacuum Tubes Black Glass Philco 1D8 1D8GT This beautiful

This beautiful

WE HAVE SCORES OF THOUSANDS OF VINTAGE ELECTRONIC ITEMS

and as I test new-in-box 5963s

This new old stock-testing RCA 6680 / 12AU7A / ECC82 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

It sounds fine with an occasional pop and tick

Matched Pair Tung-Sol 6K6 6K6GT Vacuum Tubes Black Glass Philco 1D8 1D8GT This beautifulThis matched pair of Tung Sol black glass 6K6GT tubes was tested on our Maxi Matcher tube tester with 325 volts on the plates and a bias of 36 volts. Tube One drew 26. 6 milliamps' plate current while Tube Two drew 27. 6. Transconductance was 1900 for Tube One and 1800 for Tube Two where new nominal is within one standard deviation of 1900. As I write, I am playing them in my Mini Mite 2013 and they sound great. WE HAVE SCORES OF THOUSANDS OF VACUUM