Description

Sylvania JAN6080WC/6SN7GTB Tubes. DarkVoice BottleHead Crack. Test Strong and Balanced. Each set of tubes has been tested, then listened to on my DarkVoice amp. They are run and listened to for an extended time to allow tubes to fully warm. I listen for any humming or microphonics, and balance in these pairs. Buy with confidence that they will perform for you! Testing is done with Superior TW-11 Tester. This tester is a cathode emission tester. The results are useful for relative matching of same type tubes, and also a good/bad result. Tubes are checked for filament continuity. The results should be taken as a general indication of tube health. I am happy to combine shipping on multiple purchases. If it is just tubes, I will ship up to 5 lots for the single highest price of the tubes purchased. Please wait for an invoice before paying. You will find the invoice once issued in your shopping cart.