My experience is similar to some others here and well-stated by timrhu,
So, what sounds better? The Class D I owned for over a year was the Acoustic Imagery Atsah, which is the Ncore NC1200 modules in CNC-milled aluminum boxes, very similar to the Merrill Veritas. At that time, I owned four amps. What I liked better were;
Lamm M1.2 Ref - Class A
McCormack DNA-2 LAE with full SMc modifications - Class AB
Clayton M300 - Class A
I still own the last two and in my system playing Aerial speakers the Clayton monos (300/600 wpc all in Class A) were easily the best sounding of the bunch IMO.
I stopped with the almighty NCore amps. They almost always sound impressive at first listen, clean, quiet, and cool running. For me though, they begin to show their true sound after a month or so. I've given up on them.In my case, it was a fatal flaw similar to that described in the review of the Mola Mola Kaluga by Mono & Stereo. I had no problems with high frequencies and for me it was more about inner dynamics and the presentation sounding whole instead of like a grouping of individual sounds...sort of like the difference between a band playing live and the same band creating a recording by dubbing one player over the other until finished. Sorry it is hard for me to explain, but the Class D Ncore just didn't sound as musical or involving, although they were clear, quiet and had excellent bass. I really wanted to like them best but kept thinking something was missing.
So, what sounds better? The Class D I owned for over a year was the Acoustic Imagery Atsah, which is the Ncore NC1200 modules in CNC-milled aluminum boxes, very similar to the Merrill Veritas. At that time, I owned four amps. What I liked better were;
Lamm M1.2 Ref - Class A
McCormack DNA-2 LAE with full SMc modifications - Class AB
Clayton M300 - Class A
I still own the last two and in my system playing Aerial speakers the Clayton monos (300/600 wpc all in Class A) were easily the best sounding of the bunch IMO.