To leave on or not to leave on, that is the ?

If you are talking tubed that is the case.

If you are talking SS the on off switch is the hardest on equipment. Turning the equipment on causes a power surge through the SS devices shortening there life.

Better to leave it on all the time.

Remember to take the system as a whole

If you run SS I would leave on all the time, as mention above, it's harder on the equipment. Some SS components have stand by and really all it does is shut the display off and and at most a few curcuits inside. I own both SS and tubes. My amps, Preamp and Transport are SS and stay on 24/7. My Phono Stage and Dac are tubes so they get shut off after each listening session but the are warmed up 15-30 prior to listening. If you ask any SS company about this most if not all will tell you to leave SS on all the times. When I shut off my SS gear for some reason it takes 24-48 to sound it's best again. Sometimes I forget to turn my tube stuff off and Iv'e had no problems as the tubes in my eq will last about 8000-10,000 hours. About the only bad thing is my electric bill is high as hell but what isn't in California, The Enron BS, were still paying for that crap! Happy Listening

My tubed pre- amp and amps are turned off. I notice that the sound isn't right for about 40 to 60 minutes with improvements over the first three hours.

My CD player has a class A solid state output stage, and the owners manual clearly states that it is never turned off, the off switch merely powers down the display. It is slightly warm to the touch.

My old Classe 301 sounded best after being on all weekend, and I generally left it on.

So much for sound, now about the longevity issue. As an electrical engineer, I was told that a good rule of thumb is that you half the life expectancy of a component with each 10 degrees C rise in temperature. I do not know if this holds true over the entire operating envelope, I would tend to think that the first 10 degrees would not be as bad as the last!

That said, if the equipment is properly designed, the components should stabilize well within their specified operating parameters. So, perhaps they may last 50,000 hours instead of 100,000 hours. No big deal, I don't know very many audiophiles who keep stuff for that long anyway!!

I say leave the SS stuff on and enjoy. Fix it if it breaks. Don't stress.

Ron

Folks, you are the best!

Thanks all of you for your input, it tends to reflect my own about SS equipment. But you all know that paranoia (healthy, of course) is part of the emotional baggage for this hobby.

Again, many thanks and best wishes.

you can leave it on....just turn volumn all the way down.