Nuforce STA200

+1 about imaging from the speakers (including the Xovers). If you might be looking to try to go as "dual mono" as possible for the best theoretical stereo separation with a pair of stereo amps then biamping vertically would be the way to go.. do that first but really best if you try it both ways as recommended by jackd.

The only possible disadvantage is that any variations in gain (unlikely) between the 2 amps will make one side slightly louder and may skew the soundstage when you vertically biamp.

kbuzz, this may be too late, but I saw your post about using a tube preamp. I bought the STA200 and had an old Audible Illusions tube preamp and there was a lot of noise. I bought a Rogue RP1 preamp which I picked partly because it has a low gain of 7 db, and that combination worked well.

Anyone have any thoughts on how this would compare to a Schiit Vidar?

Thanks

I just bought one from Audio Advisor, and shortly after, the listing changed to "Demo" model for $400. Looks like I might have got their last "non demo" one. :)