1 x  6SL7gt Sylvania Tube

Made in USA

Pictures show actual

Tested on Enhanced Triplet E3444 Laboratory Tester

1470/1495 micromhos @ 1.75 & 1.7 mA


Bogey (100%) = 1600/1600 micromhos @ 2.3/2.3 mA


I do combine S&H when possible