Class D sure has its "mystery" shroud against it, but I think its just the audiophile community snubbing it.Probably because many think it hasn't earned the sonic right to be called hi-end, it still has problems that need to ironed out with future technical innovations.
Atmasphere's new patented circuitry could address some of it's ill's, but it's still in prototype stage.
Technics with their expensive SE-R1 looked to cure all the problems using the GaN technology to it's fullest, but you'll really pay for that one.
Cheers George