Ok, I've got another opinion for you. The JC-2 is awesome, and that is why I own one!(as well as the JC-1's) It really is the perfect match for the JC-1's. The JC-1's aren't your typical harsh sounding solid state amp and if they err, they err towards sweetness with a touch of warmth/richness. The JC-2 is very high resoloution, and extremely quiet. I can see why people who prefer the added richness and coloration of tube gear would call the JC-2 slightly thin in it's sonic picture. If it is paired with an amp that is somewhat analytical or bright, you will have a somewhat thinner sound. I think that the JC-2 is perfectly accurate, and some people aren't ready for that kind of honesty. Anyway, when paired with the JC-1's the sound is magical. They literally were made for each other. The sound is completely sweet. Don't worry, the JC-1's are going to make your Thiels sound the best they ever have. I do believe that the JC-2 will take them to the next level also. The JC-2 is by far the single biggest improvement that I've ever realized from a component upgrade in my system... Bar none! %30 more low level details, better soundstaging, deeper bass, sweeter harmonics, it's like I turned up everything but the noise. That's as simple as I can put it. It will remain in my system for a long time.
Good luck to you!
Good luck to you!