Both tested strong and matched using an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1- 81/91% ip 81/88% gm Tube 2- 86/100% ip 81/85% gm
These are ruggedized, special quality versions of the 2C51 / 396A with gold pins. These were tested on our Triplett 3444A tester with results of 6500/6700 and 6600/6400, where...
Amperex PQ gold pin 6084 vacuum tubes (3). Tested strong 100% 94% and 94% Gm. 100% represents what you would expect from a NOS tube on our Amplitrex and...
2 - JAN-5842/417A Amperex Tubes. NIB = boxes may be tattered. Tubes may also be operated under the test conditions for extended periods to be sure that it is...
Up for sale, a Sylvania 5814 gold brand / gold pin tube. This is a 2 mica version which tests really nicely. See pics for actual results from the...
This is for one 8233 Sylvania Gold Pin tube. It is NOS and NIB. The original box is tattered, but is original. The original box is stamped made in...
Tested NOS at 104/104gm (56 is minimum) using a professionally calibrated TV7U tube tester
For KT88 KT66 6SL7 6SN7 6CA7 5R4GY 5AR4 GZ34 5881 6V6 5U4G 6550 6J7 6SJ7 6B4G 6BL7GT 7199 EL37 5691 5692 5693 6J5 6J7 6L6 274B 348A 350B 421A...