I have used the Bryston 10b and 10b Sub for years and had great success with them. Two years ago I switched to a pair of the Pass Labs XVR-1 electronic crossovers, which are in another league all together.The Pass Labs offer extreme setup flexibility in setup and better sound. I still have the Bryston 10b/10b Sub crossovers if anyone is interested.
Cheers!
Cheers!