The 2.5i is an excellent speaker but, as the poster above says, you will probably need about 100 a channel. I think the NAD 370 would be a better match than the 320. I have heard this combo numerous times and I always thought it sounded pretty darn good.
I use the 2.5's in my home theater setup and love them. You almost don't need a sub!
I use the 2.5's in my home theater setup and love them. You almost don't need a sub!