6 RCA 6K6 6K6GT Vacuum Tubes Valves Gray Glass Lot Of Six 12K8 Octal This new old stock-testing almost-perfectly-matched

This new old stock-testing almost-perfectly-matched pair of Sovtek 6BQ5 / EL84 / 6P14 / 6P14P output tubes was tested on our Maxi-Matcher 2 -- with 325 volts on the plates and a bias of -14 volts -- for shorts

They have top D getters

Transconductance measured 58 for Tube One and 58 for Tube Two where minimum (65%) is 40

where minimum (65%) is 46/40 and 100% is 85/62

smooth round bottom and top mica spacers

6 RCA 6K6 6K6GT Vacuum Tubes Valves Gray Glass Lot Of Six 12K8 Octal This new old stock-testing almost-perfectly-matchedThis lot of six RCA gray 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: 17. 1 milliamps' plate current 1220 micromhos; Tube Two: 19. 6 1810; Tube Three: 20. 9 1440; Tube Four: 23. 6 1720; Tube Five: 25. 2 1410 and Tube Six: 31. 6 1890. New