amp and pre for Soundlab M-1's

A CTC Blowtorch or an Atma-Sphere MP-1 Mk.III would be a great choice. I know of a couple of the former that are available.
Brian

Or....you could try the Aesthetix Callisto Signature. 8-)

The very best sound I've heard from Soundlabs was with Viva electronics driving them. Astonishing. This combo readily proves how bogus most power ratings are as applied to the ability to drive a speaker.

If you can eval the Vivas in your system, I'd think it would be worth your time to check them out.

Tubes108, are you thinking of the setup Jim Aud used a few years ago at the show? It sounded good, but unfortunately the amps clipped without too much provocation. Good power supplies help, however power and dB are related logarithmically, so the laws of physics still apply.
Brian

Keep the JC-1s and acquire an Aesthetix preamp (mine happens to be a Janus, but a Callisto would do in a pinch :) ). This, in my opinion, is sonic nirvana.

Yo John, why didn't you tell him to run, not walk, to scour the streets for a CAT??? After all, the question was about amps as well! Wish I could visit with you and Brian in January, but alas, work calls.