I suspect there is something in your environment that is not helping. Be it interconnects, speaker placement, room acoustics or similar. I’ve tried researching further to help give you some direction, but based on the overwhelmingly positive reviews (albeit with differing speakers etc), it has been hard.
I doubt it is your Sopras though: McIntosh MA352 experience/feedback? | pink fish media - that one user in particular has your speakers and thinks the setup is great.
It’s possible/more likely now that the MA352 is highlighting some other area in your playback chain or environment that needs attention and optimisation.
Sometimes you need a little patience and to work with your setup rather than assume one component alone is the devil-incarnate. I feel the answer is there if you care to look for it.