Pass Labs vs. Cary

If you're looking for a more "tubey" sound, I would recommend upgrading to the X-250.5 instead. From what I've heard, the .5's have more warmth.

I can't understand why everyone with Summits doesn't use a (carefully selected*) tube amp with them. It's the best of both worlds and has the advantages of biamping without all the extra electronics: SS (built-in) for the bass, and tubes for the stats.

*I say "carefully selected" because, although tubes bring out the beauty of electrostats, certain tube amp designs don't work well with them. So always check with the manufacturer first and let them know what you have in mind.
.

just enjoy your system...you are already there