Anyone Here Ever Purchased A Tube Tester?
Once or twice a day a tube sputters for a brief second in my Audio Research Reference DAC. The Reference DAC is connected directly to my amplifier and it also serves as my preamp. Visually, all of the tubes look fine. Visually, I can’t tell which tube may be bad.
The tubes are: (4) 6H30, plus (1) 6550C and (1) 6H30 in power supply
Have any of you ever purchased a tube tester to test your tubes? If so, what tube tester are you using?
@mitch4t Tube testers will not find a sputtering tube. The best way to find it is to swap it with the other channel if that is possible, if not, with another tube of the same type elsewhere in your system. It can also be a corroded tube socket as previously suggested, but IME your DAC is far too new for that to be an issue. The tube itself is far more likely.
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