David, as properly controlled double-blind listening tests have shown, there's no magic in putting amplification equipment in two or three boxes instead of one. If the power amplifier(certainly including one in a receiver)amplifies with flat response over the audible frequency range and with inaudibly low noise and distortion(commonly available these days in even modestly priced receivers), the amplification is transparent and nothing more is possible. Claims to the contrary are frequently made, but lack factual support. The vast majority of listeners(including me)use receivers for optimum amplification with Axiom and other fine speakers.
