Class D amps seem poised to take over. Then what?

I had two NAD Purfi units in my house and neither stayed long.
Ran hot, glitchy and hardware issues.

Modern Class D amps like those from Hypex or ICEpower (used in many high end brands) are simply excellent performers, musical ruler flat frequency response, SN numbers that other amps can only dream of achieving and they are respectful of power use and efficiency.

Heat and thermal cutoff is the real issue, as the power supplies can get excessively hot. Attaching finned heat sinks (ones with adhesive attach easily to flat heat shields) and providing sufficient air flow is crucial. Plus running hot kills performance. I've found AC Infinity fans with a Controller and a sensor work well and the speed is adjusted according to temperature. When the sound is not turned up the fans will be slow or stopped.

Class D has definitely come along way.  From my thinking it really has just made its way to be able to compete with A, A/B and the other variants. 
I believe that we can finally believe it when someone says "its that good". ,   but we will still always have good Class A, A/B amps to consider.  Class D is no different than the others now.  A good design along with good parts make a nice amplifier.  
We finally just have another product to consider at any budget looking for bang for the buck or recently, even to compete with the best. 
You never know,  maybe Ralph @atmasphere  will design a switching tube amplifier. Ha

If you think class d is better than class a or class a b you better get your ears checked LOL they've gotten a lot better but they're still not as good.

When someone tells me that both Nelson Pass and Steve Deckert are now designing exclusively in Class D, I will consider more.  Until then I have 2 class D's and that is more than enough.  Love the operating temperature of class D.  Oh yea, I also love the operating temperature.