I feel it is up to each individual to decide what they feel comfortable with. I have a streamer which stays on all the time (I restart it periodically as it is a computer after all). My Transport stays on all the time... My DAC stays on all the time and is periodically restarted. I have a tube preamp that is only powered up when used and a pair of Pass labs amps that go into standby when not being used. I do substitute in a pair of Quicksilver tube monoblocks that are only powered up when playing music. I try to use common sense in what I leave on 24/7. I do not mind a short warm up period.....
Leave it on?
I just listened to Paul McGowan explain that turning SS equipment on and off degrades the capacitors from the tiny power surge and that leaving SS equipment on ALL THE TIME is best. What do you do?