Hello Guido,
I had no idea you have such a musical background, very nice.
My typical initial reaction, when I read negative comments about the sound quality of class D like those in clearthink's post , is to wonder exactly which class D amps they listened to that was perceived as sounding so bad.
My next reaction, that seems to be similar to yours, is that they certainly did not listen to music amplified via my class D amps in my system since I always completely fail to recognize any of the supposed class D negative qualities they mention.
Unfortunately, I recall only 1 class D amp critic listing the brand and model of class D amp on his post that he had listened to and based his opinions on.
I welcome honest criticism of specific class D amps within the context of specific systems. However, some generalizations of class D performance (such as "I personally find that class D amplification sounds just dreadful to those familiar with the sound of real music, instruments, and acoustic spaces", "class D treble is harsh and fatiguing", "the soul of the music is missing" , "there's something missing", etc.) without mentioning any class D amp or system details are so broad and unspecific that they become meaningless.
Tim