this has been covered on prior posts bashing class d topology but just to reiterate:
- it is foolish to lump all class d together - it is a technology and different implementations will result in different sounds/performance... we don’t lump moving coil vs moving iron cartridges into broad classifications and assume all of a type sound the same and are all good/bad
- the class d modules (hypex, ice etc etc) need to be driven by input and driver stages - and how these are handled by the maker/designer greatly affects the sound greatly - ej sarmento has his st series ice power class d amps, they are voiced sweet and smooth, devialet has a big and bold saturated sound, nad has a more lean and mean quick more lightfooted sound ...etc etc
- like anything else, design, parts quality, voicing matter more than underlying technology... good engineering makes the technology do what is desired