I don't have direct experience with Bryston power amps, but I have compared the analog outputs of a Bryston BDA-1 (connected digitally to a CA 840C) with the analog outputs of the CA 840C on the same CD. Both the digital outputs and the analog outputs are active in the CA 840, so you can listen to an A/D connected to the 840 at the same time you monitor analog out. Both were running into my Parasound JC2 line amp/JC1 monoblocks.
The differences were extremely small, a surprise to me considering that the Bryston is Class A discrete vs the CA 840C using IC opamps. The advantage went to Bryston, with slightly better bass articulation and a smidge better high end space and definition.
So I would not be so fast in discounting the CA product, unless you can A/B them directly.
I also have a CA 840E preamp which I used before the JC2. Very, very good sounding product. Gave the JC2 a good run for the money. I was told by sales folks at Audio Advisor the JC2 would blow the CA out of the water, but it's not true. There are differences, and they are subtle, but at a 2x difference in price, the CA is a great value.