I am driving my 803D's with McCormack's DNA-500 and am fairly content with it. My source is a Wadia 581SE. I originally found this combination somewhat on the bright side. I believe the source and speakers lean toward the bright side and the Amp is fairly neutral. I added a Marantz SC7S1 pre and am now very pleased with the overall balance. I would like to try a big Pass Labs amp but don't have the opportunity to audition one very easily.
I believe that any system will need some balancing. The JC1's may work very well with the rest of your equipment. I very nearly purchased a JC2 preamp but the dealer wouldn't ship to Canada.
I like the concept of a monoblock as well. The JC1 might do the trick for you. At this point the only piece I would consider changing is the McCormack. Not that there is anything wrong with it. It just may be getting long in the tooth and I wonder what if something else sounds better...
I believe that any system will need some balancing. The JC1's may work very well with the rest of your equipment. I very nearly purchased a JC2 preamp but the dealer wouldn't ship to Canada.
I like the concept of a monoblock as well. The JC1 might do the trick for you. At this point the only piece I would consider changing is the McCormack. Not that there is anything wrong with it. It just may be getting long in the tooth and I wonder what if something else sounds better...