Do I really need a processor?

Hello all, I'm buying my folks an HD setup for the format switch early next year components will be as follows: 5020 Pioneer Kuro, Oppo DV-983,and bookshelf 5.1 system (maybe klipsch) with a svs sub. My question is that since my parents will not be interested in switching sources, and the Oppo supposedly has pretty good D/A conversion built in, could I set something up with amplification running from the analog outs of the Oppo and skip buying a receiver or processor? The oppo is also supposed to have good enough video processing that I shouldn't need a separate component for that right?
Any advise or opinions would be appreciated