does your system "warm up" and then sound better?

I used to own a 1973 Cadillac Deville. It had a 472cu.in. motor. This pig simply would not warm up until I started actually driving. No matter how long it sat idling!

I turn my equipment on for a minimum of thirty minutes before listening and and leave it on for thirty minutes after I've stopped listening. I don't know what gives but my system works much better after it's be on at least an hour !!!!!

hmmm, now Im a bit confused. Should I leave my pre amp and cd player on all the time in addition to my amp? If so, does it wear out my components (caps and whatever else) sooner than if I didn't leave all that stuff on? If I do (and I have been) leave my ss amp on all the time, is it heating up my crossovers in my speakers even when I'm not listening to music?

Csontos:

why there seems to be an increase in performance after pausing my CDP

The player resets, that;s why you get a marginally better sound.

B_limo: I think that you're OK if you keep your pre & cdp on. Keeping your amp on all the time may be costly!

Okay, but why does it then fall off again? And is there a way to prevent it from happening?