I am currently working on setting up my EP600 and it is all about placement from what I have experienced so far. I still have a ways to go but, there is some big differences in sound with location.
I have the NAD T773, same processor I believe but it is the V2. It does allow pretty good flexibility.
I have only one complaint about the NAD so far and it is the low hum between -74 and -8. Above that the noise does increase but I don't listen to it at that volume. I don't notice it when music or movies are playing. The sub is a work in progress, but moving it around to positions I found using the "crawl" were an improvement.
Let us know how it works out.
troy