Wow, nice system....I think just about any higher end player would be a nice addition and give you a better presentation in comparison to the A3.
Right off the bat, I'd recommend a resolution audio opus 21, which can be had used for $2.5k or the GNSC moddified version for 5k new (highly recommended IMHO). The opus is a very musical player that -I think- will compliment your CJ equipment nicely.