Debate: Class D amps need 48 hours of warmup

As with most of this audio stuff, the hierarchy goes:

• Does it have an effect?
• Can you measure it?
• Can you hear it?
• Does it affect your enjoyment?

Many here believe, "everything matters," and it probably does, but not everything that has a physical effect can be discernably measured or heard and, even things that can be measured and heard may not meaningfully affect a listener's overall enjoyment of their system.  System warm-up probably falls somewhere within that hierarchy but, even though I am sure my new tubed DAC sounds best with at least 30 minutes of warm up doesn't mean I don't enjoy the sound of it as soon as I turn it on.  There should probably be another step in the hierarchy asking, "do you obsess over it?"

Well, I’m definitely not obsessing over this. It was really just a curiosity.  I think it’s also kind of obvious I’m not selling anything.  I’m not asking you go buy a new amp or get rid of your old one, or buy a new isolating widget of some sort. 

I just wanted to know what listener’s personal experiences were.  

@mitch2 hear hear

I leave my Classe CA-D200 class D amp on 24/7 unless I'm leaving town or during thunderstorms but I generally turn it back on when I return/when the storm is over and I've never noticed a difference. While it's never gotten "hot" regardless of volume, it's warm enough to attract my cat, who would not be happy if I didn't leave it on. 

Of all my audio components the Class D AGD Audion Mk3 monoblocs require very little time to "warm up," Ten minutes is all I have ever required, and even that seems like an unnecessary ritual. The tube pre feeding then requires two hours to start grooving. The DAC and CD transport also benefit from a two hour warmup. Everything but the tube pre is left on all the time except when I will be gone from the house for days or also during thunderstorms.

I will say that the Audions did require about 50 hours of play to "break in" fresh out of the box, and that of all the power amps I have owned they reveal more tellingly what is going on with components upstream of them.