So, if you believe "audiophile" fuses sound different and better than stock fuses, you are crazy? So you attack someone because they have a different belief than you? George, you are treading on thin ice here. You may get yourself banned for this kind of unkindness.
I heard the distortions of fuses back in the mid 80s. This is not new. The latest fuses make a serious beneficial difference in a serious audio system. Anyone can hear the difference. Your class D or any other class of amp will sound better with Synergistic or Audio Magic Fuses.
However, this is not a thread about fuses, but Class D amps and their future.
I don't believe any Class D amp today is state of the art. Some of them are fantastic and better than other amps within their price range but we have lots to go in this dept. Just like digital it is a new medium so will take a while to mature. But in the last five years they have leaped from meh to OMG. However, even the coils and caps on the output of Class D amps imprint a sound. Most all coils used are just ordinary copper......If you make the coils from OCC wire and cryo them they will sound better. No one has done this. The caps in the output filters need to be world class or veiling will happen. These same caps on the output need their outside foil oriented to ground. No one is doing this....except me. The game in never ending. What is really cool about Class D is that you can get an incredible sounding amp right now for way less than those 100 lb. class A monsters, so you can spend more money on something else in you system that makes more difference (including better fuses in all your gear).