Do I NEVER shut it off…?

I guess the real answer is to try a one hour warmup and a 24 hour warm up and see if you can hear a difference. Personally I think it's bad form to leave high power equipment turned on 24/7. 

All solid state regardless of class takes days to reach full saturation/equilibrium and so needs to be left on 24/7 in order to hear full performance.

Don’t take my word for it. Never just take anyone’s word for anything. That includes the manufacturer. Unless you really think any manufacturer is going to tell you the truth, that his SS masterpiece will not sound its best unless left on 24/7/365. He won’t. Truth hurts. https://www.youtube.com/watch?v=Lk4g3cippOo

So what you do, leave it on for at least a week. Get good and used to how it sounds left on all the time like this. Then one night turn it off. Leave it off until the next time you are ready to listen. Turn it on. Listen.

Now either you realize it sounds nowhere near as good, or you realize you can’t hear the difference. Either way now at last you know the truth.  

Told you it would hurt.

I LOVE the reference to "House".. That's hysterical..! Thanks for that, @millercarbon.......I LOVE talking about all this stuff and I'm always open to learn anything. I just can't believe I'm lucky enough to own such lovely pieces....