Parasound JC 1 or Musical Fidelity KW 550?

JC-1's, I have never heard the MFidelity's but the JC-1's are simply fantastic.

These are two of the best amps available. Either should be great. I have the Nuvista integrated and it is the best amp I have had. I use to have 801s and would have loved to hear it driving them. But all Curl's designs are exceptional. I don't think you can go wrong with either.

Have you heard the MF supercharger KW550? How does it compare to JC-1s or the Nu-vista connected to a Preamp insted of as a booster? thanks