i think that if you were to listen to some good quality receiver vs the same system, but using separate amps instead, the great majority of the time, the second system would win easily in SQ.

the reason for that is that the receiver has a comparatively puny power supply and it has a hard time putting out what is demanded vs separate amps who each have their own power supplies (for a much larger total current capacity) all loafing along when presented the same signals.

anyone agrees on this?