+1 on the Rotel power amp. You should get the Rotel RMB-1585 five-channel amp. It retails for $3k new but try to look for a used one that can be had for around $2k ish. The RMB-1585 is a great amp for the money. The RMB-1585 is class AB design amp.
However, do not get the Rotel RMB-1575 amp, this is class D design. Get the RMB-1585, which is class AB. The Rotel will sound good on your B&W. They always pair really well together.
The Parasound Halo A51 or A52 five-channel amps are another great amps and will have better details than the Rotel RMB-1585. IMO the Halo A51 is a better amp than the Rotel RMB-1585 overall but it costs a bit more than the Rotel RMB-1585. Even a used Halo A51 will cost you a bit more than a used Rotel RMB-1585.
The Halo A51 originally retails for $4500 new.
However, do not get the Rotel RMB-1575 amp, this is class D design. Get the RMB-1585, which is class AB. The Rotel will sound good on your B&W. They always pair really well together.
The Parasound Halo A51 or A52 five-channel amps are another great amps and will have better details than the Rotel RMB-1585. IMO the Halo A51 is a better amp than the Rotel RMB-1585 overall but it costs a bit more than the Rotel RMB-1585. Even a used Halo A51 will cost you a bit more than a used Rotel RMB-1585.
The Halo A51 originally retails for $4500 new.