They are different in electrical design in that the Krell is strictly Class A and the Parasound is Class A/B, even though it will run class A up to a certain point. I own the 400cx and a friend has the JC1s. Both are excellent solid state amps. The final result will depend on your preamp, sources and speakers. I would compare the Parasound sound as being closer to Bryston's amps, having now owned amps from all three manufacturers.
