Matched Pair General Electric GE 6V6 6V6GT Vacuum Tubes Black Glass Amperex 5915 NOS

Matched Pair General Electric GE 6V6 6V6GT Vacuum Tubes Black Glass Amperex 5915 NOSThis new old stock testing matched pir of GE 6V6GT output tubes was tested on our Maxi Matcher 400 volts on the plates and a bias of 36 volts for shorts, gas and transconductance. There were no shorts or gas. Tube One drew 20. 3 milliamps with a transconductance of 2320 micromhos while Tube Two measured 21. 3 2520. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so.) These

Plate current draw was 32 and 32

This National Union NU 2B7 tube tested to spec on our Paul Hart-calibrated TV7/U

I have listened to it in my Bottlehead Crack headphone amplifier and it sounded great

This is a rather-early tube

new in box GE 12CX6 tubes tested to spec on our Paul Hart-calibrated TV7/U

sutured tops and a large D getter angled at 45 degrees

This RCA 6HJ5 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box DOT-39 20K To 30K center-tapped interstage transformer is sold as-is as I have no means of testing this output transformer

They have gray

This milspec / industrial-grade Sylvania JAN-CHS-5932 / 6L6WGA output tube was tested on our Maxi-Matcher 2 for shorts

This black plate GE-MANUFACTURED

Transconductance measured 41