Hi Frank,
I'm using a pair to drive myMagnepan 1.6's, I'm very happy with them.
Before these I used a pair of Odyssey Stratos mono's, they were blown away, sold them immediately
The Ncores have much bettter low end control, great sense of space, sound is very neutral and relaxed.
I think there was a quite recent thread on these Frank. I've never heard a bad thing about them and the kits look really easy to assemble. Being a big fan of my Bel Canto mono blocks I'd love to hear the NC400 mono blocks because they are supposed to be a big step up. If so, they must sound spectacular.