Sonus Faber & Nautilus Set Up. It's tough to synchronize gain control on B&W, but after a few weeks of tweaking, it has become a marvelous speaker. I found Stradivari to be a better speaker in many dimensions. A bit dissapointed at B&W's depth of bass, but still beautiful to look. Great WAF!
IMO you definetly need some acoustic isulation panels, ect. this also might be a big difference makers in your sound quality at low cost.
Many people over look proper speaker placement (golden cubiod)& proper room acoustics.
these to items have been used for centuies to improve sound quality. gearheads tend to throw money at components, ect, trying to achieve better sound. & never give the golden cubiod or acoustic treatment a second thought. Probably because it is not flashy or expensive.
I can not believe your running another set of speakers next to those B&W's!
Try emotiva amps . I think their a hidden gem. The price point are so low compared w/their specs. they blow away amps costing three/four times as much.
kodg
p.s Check out info. on the golden cubiod its a mathmatical equation used before they built the pyramids & should help with proper speaker placement. proper speaker placement might be all you need.