I have not used your model B&W's, but have used the CAP-80 and CAP-100 in the past with Thiel and Magnepan speakers...with great results. I had tried the Krell integrated and found it was hard to listen to for any period of time...not a good sign. I've been lucky enough to have some good to very good audio products, inc. the CJ ART, and now am using the BAT integrated with the super tube option. That said, I have great respect for all of the Classe integrated amps.