It's ridiculous to lump class D amps together as having a particular sound. It's just as nuts as lumping together all class A/B amps, or tube amps together. The variety of amplification outcomes in each type of amp is so varied that I challenge anyone to be able to reliably say which type is playing in a blind test. There are dry-sounding tube amps, wet sounding class D, neutral sounding variants in each class. This is a tired subject, which doesn't merit further examination. I would rather be listening to my music....and I don't care which amp is hooked up...
Is D for Dry? Class D...
Class D sounds dry and lifeless... thats all, carry on