I've had excellent results with Thiel (anything up through the 2 series, I had 2.2's). Also had great results with Magnepan MG IIb (with the CA-100 I would not go higher than the 1.6). Bass is not a strong point with this amp below 30hz. Otherwise it's a nice amp, I actually had 2 at one time. Right now I drive Thiel CS 5i's and Magnepan 3.6's with a CA-400. Good luck
