Excuse my ignorance, but I'm wondering how a Denon AVR-4800 A/V receiver (no other amp, at least not yet) would match up with the M80s - I'm mostly concerned about the M80s being set at 4 ohms. Would the M60s be better suited for this machine? (I live in a 800 sq. foot loft, if that matters at all in terms of overall dynamics). I'd appreciate anyone's thoughts.