Which power amp is a good match for CJ 17LS Preamp

How about a CJ?

We've spent much time with the entry-level CJ PV10 tube preamplifier and the Clayton S40 pure Class A power amplifier combination, yielding superbly musical results. From our extensive listening experience, we know of no solid state model (not to mention many very expensive tube models as well) that can match the musical performance of Clayton Audio (http://www.claytonaudio.com).

I have a 17ls connected to a MF2500 and am extremely pleased with the combination.

Nguyenchiro, I respectfully suggest that the more critical matching problem is between speaker and amplifier, not amplifier and preamplifier. By and large, my experience has been that there is more complex interaction, and need for balancing strengths, here than between the amp and preamp. That being said, one can still move on to find the speaker that matches well to the amplifier one has choosen. I would simply recommend reversing the sequence based on my experience. Best of luck!

What kind of speaker do you have?
I have a friend that own CJ-17LS and Sim W-5, with BW Nautilus 804 and he like it, did u listen the pair at TOP AUDIO in Orange County any chance?