4 Tung-Sol 6K6 6K6GT Vacuum Tubes Valves Black Glass Lot Of Four NOS-Testing February 13 2024 It measured an almost-perfectly-balanced 71/72

It measured an almost-perfectly-balanced 71/72 where minimum (65%) is 56/56 and 100% is 86/86

The pressing is quite-quiet with little surface noise and only the occasional pop and tick

MOST OF THE TUBES WE SELL ARE OVER 70 YEARS OLD

copper support rods and nice flashing

PLEASE INSURE THEM

4 Tung-Sol 6K6 6K6GT Vacuum Tubes Valves Black Glass Lot Of Four NOS-Testing February 13 2024 It measured an almost-perfectly-balanced 71/72This new old stock testing lot of six Tung Sol black glass 6K6GT tubes were 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 and they measured as follows (from left to right, top to bottom): Tube One: 31. 8 milliamps' plate current 2170 micromhos; Tube Two: 35. 1 1980; Tube Three: 40 2120 and Tube Four: 42. 1 2260. New nominal