Thanks for the replies so far. I currently have a schiit Freya+ and Red Wine Audio Sig 30.2. While this combination really sounds good, I'm comparing it to a setup I heard when the ProAcs were new - Cary monos 300B and Audible Illusions 3. Every track was magic - didn't break down by bass, mids, treble, etc. I was just totally engaged with the music, and I didn't need a lot of volume to get there.
I'm looking to get that same feeling back, but the CAV may get me there with some extra watts to spare!
More feedback is still welcome!