On or Off


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?

avl1947

i have a pass amp also.  the manual is not specific about leaving the front panel switch on in addition to the rear switch.  

i do leave the rear switch on but turn off the front panel switch after listening.  

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.

I leave my Pass pre and Ayre phono on but switch off the Pass amp but try to give it at least 30 minutes warmup.