Matched Pair Sylvania 6V6 6V6GT Gray And Silver Bottle Silver Top Vacuum Tubes NOS-Testing Kitty almost-perfectly-matched pair of Sylvania-MANUFACTURED 6BL7GTA

almost-perfectly-matched pair of Sylvania-MANUFACTURED 6BL7GTA dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

The dust jacket is in nice condition

new in box GE 6JW8 / 6LX8 / ECF802 tubes tested to spec on our Paul Hart-calibrated TV7/U

This new old stock-testing matched pair of GE 12BH7A dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Seven are 6S4As and one is a 6S4

Matched Pair Sylvania 6V6 6V6GT Gray And Silver Bottle Silver Top Vacuum Tubes NOS-Testing Kitty almost-perfectly-matched pair of Sylvania-MANUFACTURED 6BL7GTAThis new old stock testing matched pair of silver top Sylvania 6V6GT output tubes was tested on our Maxi Matcher 2 for shorts, gas and transconductance. There were no shorts or gas. Plate current measured 24. 5 milliamps and transconductance was 2480 micromhos for Tube One. Tube Two measured 25. 4 2660. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so.) They have tall