Do you power your Class D amp on and off?


I have a PS Audio Trio A100; the manufacturer recommends leaving it on all the time. I power it down, though, when using headphones. Does anyone have experience powering a class D amp on and off on a daily basis?
afranta
I have a pair of Meridian 105 monoblocks (circa 1977) that don't have a power switch.
I have the Nuforce 9V3SE amps and power them down anytime I'm not using them unless I plan to use them within a very short time. I honestly can't hear much of a difference between stone cold and on for a while and personally I feel better from a green perspective not keeping the amps turned on when not being used.
Mine stay on (Ref 9 V2 SE)... when they do get powered off they take many hours to come back 100%.