4 Tung-Sol 6K6 6K6GT Vacuum Tubes Black Glass Lot Of Four NOS-Testing 25BK5 though is not recommended for

though is not recommended for this headphone amp which was designed for 12AU7s

(New US-made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 1700 micromhos or so

IN NEARLY 9000 SALES IN BOTH OF OUR ETSY STORES

This matched pair of Philips Miniwatt PCF80 / 9U8 tubes was tested on our Paul Hart-calibrated TV7 for shorts

Bottles: tall

4 Tung-Sol 6K6 6K6GT Vacuum Tubes Black Glass Lot Of Four NOS-Testing 25BK5 though is not recommended forThis 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