I have a Pass XP-22 preamp and I would like to know if it should stay on when not in use, it has a switch on the back but I always have it on; Being class A the temperature is high, can this shorten the useful life in the long term?
I reently bought a used Pass Labs XP-17 phono preamp. It too only has an on/off switch on the back. I called Pass Labs and was told to leave it on all the time.
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