Hey Minirock are you out there? Seriously though, a new or used amp should give you the POWER you desire. Parasound, Rotel and many others will give you great performance at a lower cost than buying a 5803. Unless you need all those features from the denon?

*Michael*
AV123 Refugee - X-LS Encore, X-Voce, X-Omnis, Elt-Dpa's
Denon AVR-591
Magnavox NB500MGX BDP