How about you get a little more technical with this.... The Denon unit has Dual 64 bit Burr-Brown signal processors in it. This is the same signal processors that are used in their High End Home A/V set-ups. The sound quality is second to none and it would honestly take an audiophile to appreciate it.
It is not the type of head unit you can buy from Dick's Audio Shop for the "bumps in the trunk". It is a VERY detailed and performance oriented Head Unit for the right person and application.
I have the same unit, in silver that was a proto unit for Rockford Fosgate that was only available in Japan. Yes it wont do all the frills of today's head units but there is NO comparison for overall sound quality that this unit prodices.