Do you power your Class D amp on and off?

Spectron also recommends leaving their amps on.

The reason is that class D amps take much longer to run-in with their IECs and turning them off is akin to turning back the clock on the run-in period where the amp will need on/'run time to sound its best again.

The only time I turn mine off is during bad storms and if I am going to be away for more than a week during thunderstorm season. I do use a Hydra on mine in any event.

PS Audio is correct. Not only well broken in class D amps can be left on all the time, but they sound a lot better if they are left on. If a class D amp is left off for a spell, it may take many hours for it to reach peak performance once you turn it back on.

Timrhu's right: I turn the amp off for late-night listening. My pattern is to power it down, and then back up in the a.m. It's clear some think that's a bad idea, performance-wise. I can't say that I notice much of a difference, but it's usually been on for an hour or two before I do any listening.

I could turn it off only when using headphones, but figured that since I'm turning it off, I might as well leave it off for the night.

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.