You should take a look at the current thread on Krell KMA 160 amplifiers, the sonic signature is fairly similar as the KSA 200 is from the same generation of Krells and the power output is pretty much the same. I used an ARC SP11 MkII with my Krell KSA 80 (smaller sibling of the 200) years ago and drove Duntech Princesses, they worked fine together. This generation of Krells excelled at driving difficult loads, particularly Apogee speakers, and I always felt they sounded excellent with all the Duntech models of the time as well, including the big Sovereigns.