You should audition it. IMO I feel your Bryston mono blocks needs a Bryston Pre. See if you can hear one, and look on the used market. Lots usually on canuck audio mart Dave. Don't get my wrong, CA is great stuff for the money, and make great cd players especially. But I feel a 10-15 year old Bryston pre would knock the socks off the CA, and still have a larger warranty.lol Cheers.
Geez for 750 pounds you can get a mint, used Bryston Pre Amp, that will step on the CA. IMO anything Bryston has ever made in the pre amp section of their lineup over the years should easily out perform anything CA has made for pre amps. You will also be amazed on how much bass those MA RS6's can produce when allowing the Bryston Pre to pass through the sound untouched. Lots of Slam. And like Stu stated, there are other ways of using a sub.
OK, so here's a question for ya Nick (or anyone else). Is there a way with a pre-amp to hook up more than one power amp? What I am thinking is that I'd like to emulate an A/B setup using a preamp.
I read somewhere that you can actually run a Y adapter out the pre-outs on the pre-amp, then hook up 2 amps this way. I'm sure this is possible, since this in one way to bi-amp anyway. But instead of connecting both amps to one set of speakers, running two sets of speakers.