It all depends on the particular amp... The class D module is one of the factors in the sound of an amp, but the sonic characteristics of an amp go far beyond the contribution of the module.
The only amp powered by ICEpower 125 ASX2 that I know is the Rowland M125 bridgeable amp.... It has fully balanced, and is transformer coupled inputs. According to all reports I have heard about M125, it has been found to be a great music maker. See more information at:
http://jeffrowlandgroup.com/kb/questions.php?questionid=693
Regards, Guido
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