Nuforce STA200

Ooh, I'd like to know this as well.  I love the 530s

I bought a STA200 and have about 5 hours of listening into it. Using on 86db/6ohm speakers and coming from a well respected chip amp. First thing I noticed was the impact this amp has at higher volumes.Very dynamic and lively -  it is meant to be played loud!  However, highs are a bit strident / grainy and bass/mid-bass is a little too exaggerated and loose (on my speakers).  I have a feeling the 60hz-200hz range is somehow accentuated on this amp.  These faults are easily overlooked when the volume turns up and you start "feeling" the music. It's dynamics & speed are addictive.  I wonder how much improvement could be had with a 2nd unit in a vertical bi-amp set-up...my rational self thinks it may not be worth it for a 10% subjective improvement in performance.  I will continue to listen for improvement as the amp breaks in.

Thank you Mr. D.  I'll follow up with an update after 200+ hrs of break-in.