Do you power your Class D amp on and off?

The only time my Gilmore Raptors go down is during thunderstorms - then they are unplugged. Other than that they are on 24/7.

Leave it on all the time. They draw only some 15 watts inactive. That is, unless there is a thunderstorm in the region.

off when I go to sleep on all the time when I'm up.
I use Sunfire Symphonic Reference which is partially class D.

My ARC 150.2 stays on 24/7, unless I'm away on vacation. ARC recommends leaving the amp on, and various reviewers have commented that sound quality improves up to the point where the amp has been on continuously for several days.

I'm guessing you power it down as otherwise the speakers would be playing while you are listening to headphones? If that is the case it is probably not detrimental to the amp to be turned on/off occasionally. Though with the power switch on the back, it may be a pain to reach around.