[kyrill]

i have a JVC HD1 projector and a Sony blu-ray player and both dont even have an ON /OFF switch
The manufacturer forces you in a way to keep it always on.

I suspect the general EE idea is it is better for the gear to be always on, except when it becomes too expensive for instance class A heavy poweramps and tubes

[Bigfish]

Turn it off you selfish bastards.
Did I say that out loud? aa

Depends on how big the power supply is. My Odyssey amps have 360K in them, and it takes a long while to charge them. When you turn the power to the amps off, the caps start a discharge in about thirty to forty minutes. The way I have it figured it takes somewhere around 36 hours to fully charge them. So I'll just donate the $3.00 a month to Duke Energy to be able to listen to them anytime I want to.
gary

I also own the Odyssey Mono SEs and if they are shut off it is only to change cables or the power is off to the house.  When I purchased Klaus told me it would take over a day for the capacitors to fully charge and this charge would be lost in less than an hour if the amps are shut-off. 

Yes, I might be greedy and selfish but I am not going to shut them off.  If the man that designed them says to leave them on and by reputation has an excellent ear for sound I am going to leave them on! 

I also have a Candela and shut it off imediately after listening sessions.

Ken

[BobM]

 I had the Korato class A amp here for a while and I can say that it needed at least 6 hours to open up, but still sounded better after a full day (24 hrs). This is one amp that needs to be on all the time, and being class A, it throws off a bit of heat and uses up some energy, even at idle. I've heard this about class A amps, so I think the answer there is a definite "yes, on all the time".

My regular components however need about 20-30 minutes to warm up, but I do think they sound better yet after an hour or so. That is definitely true for the tubed components (preamp, phono stage). On all the time? I think not, but definitely better with some time turned on.

Enjoy,
Bob

[martyo]

In the 70's when I first started hearing about leaving gear on 24/7 I did. Over the years it got to be warming up the gear for 1/2 hour or so. I believe it was and still is me that needs to warm up, or actually chill out. I now have tubed gear and just turn it on and let it rip. That would also be the manufacturer's recommendation.

[Sonny]

You know guys...I have Ric Shultz Mono Blocks, and the ARC LS-9 Pre.  The mono blocks, four of them, run at about 5wpc (idle) and the LS-9 (20wpc) and I still turn things off at night and when I go out for a period longer than 3 hours...
I just don't think it's necessary to have things on all the time...  When I had tubes, I did the same, one, they use a LOT more juice and two, tube life...
T