I'll just chime in to say that I had the JC-1's in my house in several systems (Maggies, Gallos, Aerial 10T, Avalons) and I was not impressed. To me, these amps just do not bring life into the music. They may be powerful and make bass, but I never heard much in the way of magic or resolution from them. Not anywhere near as good as the Ayre V1xe that I currently have. I also heard the JC-1's in a store and was not impressed. I think there is too much hype on them... but that's just my 2cents!
