I'm coming from an old bottom of the line Sony compnent system that I got from a Crutchfield tent sale back when I used to live in C'ville. And a 1980 pair of Jensen 3-way floor speakers.
I've been listening to my new NAD system and LSi9s all day, and I am floored. First, there are no C521s to be had right now and the factory is not shipping anymore until after the end of the month, so the store loaned me a C542 (nice). My receiver is the C720BEE.
I was a little worried because so many people said that that receiver wasn't enough for the LSi9s. Well, I can't even get the vol 1/2 way up before it feels like my ears are gonna bleed, and that's not why I wanted this system in the first place.
Lastly, I was NOT expecting this level of good base rsponse. For bookshelf speakers, I think they are phenomenal. I actually have the bass turned back a little and the treble turned up.
Thumbs up for NAD and Polk. Now, where in the hey did I put that Dire Straits CD - dang it!!