If you think about it Ralph, linear solid state amps that are well made but with global feed back and a bit of it, also have the same lifeless sound that many say Class-D has.No argument there, but the kind of feedback Bruno is talking about is a different matter. Nelson Pass wrote a great article about this- you can find it on his DIY site. In it he speculates about 60 db, but points out how impractical it is to add more gain/circuitry to get there!
The thing is, in class D making gain isn't a problem. An essential bit of the class D circuit is something called a comparator, which is a lot like an opamp run open loop. If you know your opamp theory, that means you have nearly infinite gain. I'm nutshelling this a bit, but the point is you can make a lot of gain with class D without adding extra circuitry to get there. So 60 db of feedback is very doable.