Debate: Class D amps need 48 hours of warmup

Who would own an amplifier that didn't sound its best until being powered on for two full days?  

My ears tell me that they take about as long as Class A-B amps to "worm up" / sound their best  BUT- sound worse than class A-B until they are warmed up.  

Who would own an amplifier that didn't sound its best until being powered on for two full days?  

OK, guys, I know this is sounds like a weird question, but lets’ not attack the replies, or even the author, until we’ve seen informed replies.  This kind of judgementalism is really not what I was looking for when I posted. 

my Purifi 1ET9040BA monoblocks from Apollon have never needed warm up. They deliver as expected with my speakers at whatever time on. Fresh on or 1 hour into playback. And no leaving it off has never led to strident audio. If your amp does that, that is a faulty solid state amp

There are so many variables as to what makes our systems sound "good".

For example, could it be that coming home from vacation, you had forgotten what your system sounded like, and that previously built-up brain sound memory was lost during your time away? Same could apply to this 48-hour waiting period.

It's like when you get a new component or some upgrade. At first, it sounds great but then you get used to the sound and it is hard to say you can hear the same improvement. Pull that new component out and then see what you think.

Have you listened to your system during the middle of the day and then late at night in the wee hours of the morning? I bet you would hear some difference when the ambient sounds of the day have subsided.

Just my thoughts.

@ Erik_Squiers - 

If the amp is on, but nothing is playing, after 30 minutes the volume knob returns to the starting position, which is off.

Rich