smoother, liquidy sound CAP 101 or MF A3.2?

Boy I hate to rock the boat but my experience is a little different. FWIW, I am speaking from experience with Classe and MF but not the exact models you are referring to. Hence, I am commenting on what I believe is the "house sound."

I would say that MF definitely has a smoother more rounded and warmer sound. Almost tube like if I dare. Classe is not bright at all, it actually may even be considered a little dark. Classe gear has always thrown a terrific soundstage with lots of space and depth.

Both are top notch performers and should match well with that B&W tweeter.

-Rob

I own the CAP-101 and use it with Harbeth M30's to my great satisfaction. As Ryder said, if you want smooth and warm, Classe is the way to go.

I have not heard of the MF A3.2 but have owned the Classe CAP-100 which is quite similiar to the CAP-101. If you want smooth and warm, the Classe will fit the bill. I have paired this integrated with B&W CDM1SE and N805 and got great results with an unfatiguing sound. Also, keep in mind that the room is an important factor as a bright sound may be caused by poor room acoustics apart from the associated equipment.