Matched Pair General Electric GE 6K6 6K6GT Black Plate Vacuum Tubes December 28 2022

Matched Pair General Electric GE 6K6 6K6GT Black Plate Vacuum Tubes December 28 2022This matched pair of GE 6K6 6K6GT tubes was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 36 volts for shorts, gas, plate current and transconductance. There were no shorts or gas. Tube One measured 2000 micromhos, 24. 2 milliamps' plate current. Tube Two measured 2160 26. 6. 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

I am playing it in my Musical Paradise MC-3 single-ended integrated amplifier with The Eagles' seminal "Hotel California" album and it sounds terrific

Their readings are 44

It has gray

This trio of RCA 6K7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

new in box US-made 3GK5 tubes tested to spec on our Paul Hart-calibrated TV7/U

essentially

4 milliamps' plate current

I have played it in my Schiit Vali 2 headphone amplifier and it sounded great

new in box Philco 12K7G tubes tested to spec on our Paul Hart-calibrated TV7/U

These tubes have gray coatings from the very tops to within 12 MM of the bases

This matched pair of Hytron gray glass 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

Transconductance measured 77 for both tubes where minimum (65%) is 40