Serge,
I was looking at your initial thread posting again and you stated you're considering Lab.gruppen, Powersoft, XTL and others. These are pro amps used for large venues and not intended for home audio.
I apologize that I didn't read your original post closely enough. However, all of my replies, as well as most replies from others, were based on the assumption you were looking for an amp for your home audio system.
I've never used pro amps and have no useful knowledge about them. The info and impressions about class D amps was based solely on my experiences and knowledge of home audio class D amps and may not be applicable to the pro audio class D amps you mentioned.
I think you need to clarify exactly what purpose these amps are intended for.
Audiogon is a site devoted to home audio, not pro audio environments that are used in clubs, concert halls and auditoriums.
If you are interested in pro audio amps, I would suggest posting your question on a forum devoted to such.
All of my replies, and I think most if not all of the other replies on this thread, were given from the perspective of home audio and therefore should be disregarded.
Sorry for the confusion,
Tim