Class "D" amp? I do not have a clue. Do you?

I'm convinced the better Class D amps are those that pay special attention to the power source on-board.

"I'm convinced the better Class D amps are those that pay special attention to the power source on-board."

Mapman - That would explain better reviews for BC Ref1000mkII
vs. original Ref1000. Same Icepower module (1000ASP) with built-in SMPS but new version has additional supply module/board with bunch of electrolytic capacitors.

That goes both ways when it comes to power. A large improvement was made not only to my Nuforce amps but all else in my system when i invested in power regeneration for my systems power supplys.

Also trying out the latest from Nuforce there Ref 18 and i can say without hesitation King Crimson will not run you out of the room if fact you will want to get comfortable and hear the whole lp. IMO

It is also possible that new generation is just only a little bit better (like BC Ref1000M with extra power supply caps) and "new generation" allows some critics to reevalute (read: save face) since others scored them much higher. For instance REF1000 was evaluated bu Martin Colloms for 10.5 points while Krell got 130 - that's less than 1 of 10. Ref 1000M is Stereophile class A. Sound like two completely different amps but in reality both use exactly same Icepower module with built-in SMPS.

The first class D amp I was aware of was made by Infinity way back when (before they made speakers). The idea is nothing new and has been around for awhile. I think most car amps are Class D. It makes allot of since in auto and mobil applications. However, a liner power supply is still the way to go for the best sound and all designers know this. It does cost allot more and wastes energy and maybe it is getting harder to source really great transformers?