Regarding the amp for the N804s:
I'm using the B&K 202 (one generation removed from the current 3xx series), pushing N802s: the B&K is transparent, although for the hungry N802s I added B&K monoblocks, with the 202 driving the HTM-1 Center (a N804 in a box), as well as N805 rears: the amp is a great reasonably priced solution. The Rotel was rated very well in the articles that I read.
I'm using the B&K 202 (one generation removed from the current 3xx series), pushing N802s: the B&K is transparent, although for the hungry N802s I added B&K monoblocks, with the 202 driving the HTM-1 Center (a N804 in a box), as well as N805 rears: the amp is a great reasonably priced solution. The Rotel was rated very well in the articles that I read.