Debate: Class D amps need 48 hours of warmup

@soix and lets keep it that way. 

@jbuhl - That's exactly my experience, but it's limited to ICEpower.  My Hypex, cold sound better, but do seem to benefit from playing all night long.  You and I are not the only one's who've made that observation about ICEpower specifically.  I was kind of wondering if it was something unique to the brand and was really hoping others with other brands have had a chance to experiment.  

In my case, I found this out by accident.  I would normally leave4 my amps running all the time,  but when  I went away for a vacation I unplugged my whole rack. I came back and I thought something was broken.  I wonder also if certain class D amps take that long to warm up if it could be part of the complaints users have. 

No experience with class D amps but every Class A or A/B amplifier ever owned tube or solid state needed at least about an hour to sound its bes. As to Class D, I would think that you can just keep it on 24/7 no?

@erik_squires after an extended period of time unplugged the amp or dac or preamp takes longer I agree. At least 24 hrs. 

I’ve found that my NAD M33 Masters Integrated sounds tight, compressed, and thin for the first 30-45 minutes after it has had power turned “off” to it (at my ac filter/pdu).

My Krell K300i integrated only takes about 15min to warm up and sound better.

To be fair, I’m not sure it it is the amps or the rest of my chain that improves with a bit of warm up.   I’ve never experimented with removing power to just my amps.   It could also be partially due to my streamer and DAC warming up.

Every power amp I've owned has taken between an hour and two hours warmup to sound its best. Preamps longer.

@easystreamer Perfectly reasoned and stated!