I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
eBay
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
eBay
Matched Pair. These are burned in and then matched for pairs on an Amplitrex AT-1000. JJ Tesla is a mainstay in the Vacuum Tube industry. Here are the virtues of JJ Tesla ECC83S tubes Try these in your McIntosh, ARC, Dynaco preamp or any device requiring a high quality 12AX7.
eBay
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
eBay
2 x 12ax7a Sylvania Tubes. Tested on Enhanced Triplet E3444 Laboratory Tester. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. Bogey(100% or new) = 1600/1600 micromhos @ 1.2/1.2 mA +/- 10%.
eBay
Identical date codes on each tube read "k63 Delta7D" and were made in Holland. Both tubes feature long, 17mm plates; early Bugle Boy versions; and a top-mounted rectangular "D" getter with Foil Strip.
eBay
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly. See Photos for test results.
eBay
New old stock 1 VINTAGE TELEFUNKEN "FISHER" 12AX7A / ECC83 Vacuum Tube Amplitrex Tested strong. Condition is "New". Shipped with USPS First Class.
eBay