I had the SCA2 with circa 1995 SCM50a speakers. My comparator was an EAR 802. (Long out of production)
As a context live and recorded music may be emotional, depending on the performance and my mood. While I love to be moved emotionally by music, it's not a regular thing for me.
The SCA2 and 802 were both well broken in but sounded quite different. Bottom end was a bit bloated and midrange a bit thicker with the EAR, though I preferred that to the SCA2. I felt the SCA2 was a bit unrelenting, though that was correctable with fuller bodied sources. I could appreciate each for what they offered, but again preferred the colorations of the 802 to the cleanliness of the SCA2
About 5 years ago, I had the SCM50A with a Pass Labs XP12. Magic. Even frequency response, quiet and with good texturing of acoustic instruments. The combination for me was great. A experience of being in the presence of music being played, rather than reproduced. The 50As were a review piece for me, if I could have afforded them at the time, I'd have bought them in an instant. I was allowed to have them for two months but returned them after 6 weeks because they were ruining my ATC SCM20A-2 speakers, which were paid for and thus more affordable.
FWIW, I have a lot of experience with active ATCs (10A-2, 50A, 20a-2, 50A -new tweeter - and 100Asl also new tweeter). The preamp makes or breaks active ATCs, for my taste.
Good luck!