I’ve been buying, listening to and selling/swapping class A and A/B audio gear since 1974. Last year I downsized and so needed to simplify the space and reduce the number of ’boxes’. So I sold off my large monoblocks, preamps, DACs, subs and large floorstanders. Bought a pair of Goldenear Triton Ones (class D powered bass units in each). This was my first introduction to class D - very happy with the sound. Last month my NAD M33 arrived (Class D again - this time by Bruno P.) and to say I am happy is an understatement. In my room they are a wonderful, clean, emotional and tonally rich combination with a great synergy between amp and speakers - definitely no nails scratching on a blackboard. These are all keepers.
I have never heard older class D models in stand alone power amps so cannot comment on them, and even if I was able to, my views would be entirely dependent on the combination of components used and room they were playing in.This particular class D design and configuration is a game changer fro me.