I have an opportunity to get a Marantz AV-560 preamp/tuner/processor at a really good price at my local Hi/Fi shop. Here's the question. I own a Nakamichi AV-7 receiver which is prologic. Can I use this processor with my receiver so I can connect other digital inputs (ie. my PS2 and a satellite receiver I am looking at also buying soon) and get DD and DTS for my DVD player? Can my Nak and the Marantz AV-560 play nicely together or am I just dreaming? I have to act soon since they only have the one preamp left. HELP!