My experience... moved my HK 7200 to bedroom duty. Bought Outlaw 990/7500.
Huge improvement - cleaner, better seperation etc.
Added QSC plx 2402 amp for mains. Drastic improvement - cleaner still, huge sound,
dead quiet, bass has come alive & hits hard (this fact confuses me).
The QSC fan isn't noticable at any appreciable volume.