My Apologies to Miller Carbon

" Steve recommends leaving them on for best sound"

I had an SMc (old McCormack) DNA-1 and Steve recommended leaving it on. I did for the better part of 20 years with no problem. Klaus Bunge of Odyssey Audio says the same thing about solid state ... leave it on. Maybe the exception would be true Class A amps, since they generate so much heat? A/B not so much.

I would not leave just any SS amp on all the time. Warmup when possible more likely. It’s Likely to shorten lifespan in many cases if left on . There are exceptions. I leave my class d amps on 90% of the time because they do not consume much power idle and maker advises to leave them on in the manual. Tube amps are mostly right out to leave on all the time. .
It’s fine to be contradictory to common knowledge just be aware of the pros and cons. It’s seldom ever a slam dunk case always.

I like the tone of this thread. Thanks stringreen

Me too.

Well MC certainly gets some things right, but God help us all if you start extoling this on this forum. He is almost intolerable when he is wrong. So please think of the children.