Matched Pair RCA Victor 6K6 6K6G Vacuum Tubes Gray And Silver Bottles ST Shoulder Style Novar Plate Cap T70 8 milliamps' plate current and

8 milliamps' plate current and measured 2060 micromhos

black plate

but this tube is different enough that it does sound good

new in box Sylvania 12BK5 tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured 38/39 on our TV7/U where minimum (65%) is 32/32 and 100% is 49/49

Matched Pair RCA Victor 6K6 6K6G Vacuum Tubes Gray And Silver Bottles ST Shoulder Style Novar Plate Cap T70 8 milliamps' plate current andThis matched pair of RCA Victor 6K6G tubes was tested on our Maxi Matcher with real world voltages of 325 volts on the plates and a bias of 36 volts. Tube One drew 21. 3 milliamps' plate current while Tube Two drew 23. 5. Transconductance measured 1630 and 1730 micromhos, respectively, where new nominal is within one standard deviation of 1900. These are beautiful tubes with gray and silver Coke bottle envelopes; anode radiators for cooler operating