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