Which Class D Amplifier? PS Audio, Ghent, Nord, Merrill or other???

As far as warm up is concerned, I cannot hear any differences in a cold start up vs. the amp having been on for 4 hours... other than Bourbon has taken over and everything in the room is just better.  

As far as warm up is concerned,  other than Bourbon has taken over and everything in the room is just better.  

+1 and more!!
 
Amps are adjusted and calibrated at the factory for peak performance after a short 1/2-1hr warm when they've reached operating temperature, even tubes, to say they sound better after hours and hours is a furphy.

Yes electrolytic capacitors like to be formed/polarized with a little time from new, this again is only a short time, and not every time it's turned on.

Cheers George

As far as warm up is concerned, I cannot hear any differences in a cold start up vs. the amp having been on for 4 hours... other than Bourbon has taken over and everything in the room is just better.  

Me neither. I can only hear it after at least 24 hours.  I suspect this is very amp specific however. But mine are stock ICEpower modules. YMMV.

georgehifi stated:
     " Amps are adjusted and calibrated at the factory for peak performance after a short 1/2-1 hr warm when they've reached operating temperature, even tubes, to say they sound better after hours and hours is a furphy."

furphy?

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Batteries not included,
Tim

why would anyone turn off their amps after listening, especially class D amps