all well designed amps, whatever the class, (except class B, which is not used anymore) will put out a signal free of distortion.

the only thing they do is amplify low level signals in order to drive speakers, using different classes to do this.

the main requisite is that you have enough power - Watts - to attain satisfactory loudness levels.

See: http://www.blu-ray.com/community/gallery.php?member=Gelli
or: Axiom Gallery