Warm romantic & detailed

I’m not ready to say it’s your speakers necessarily. Could also be a mis-match of cabling.
I’d be willing to send you a pair of MIT 700+ speaker cables to experiment with to see if they are a better fit.
These cables are from 20 years ago and are like garden hoses.
They quelled every "harsh" sound I ever hooked them up to.

Spendors definitely can handle the music you like. They are tremendous speakers and much more natural sounding than the Focals.
Sonus Faber and Habeth are also brilliant. Will work well with your Mc amp. Any one of the tree will resolve the issue.

The Focals need a very warm amp. You would have to swap your Mc for Naim to get that balance closer to natural.

Alternatively, you could look at other warmer amps like Pass or AVM. I have had a few customers swap AVM amps int systems with bright speakers and they are getting wonderful results.

Shahinian Obelisks.

How about Spatial M3 Sapphires open baffle as an alternate speaker to consider? Check out New Record Day review to get an idea of whether these may be what you are looking for. 60 day return policy if you decide they do not work for you. Plus 92 db efficiency.

+1 on Tannoy
+1 on Sonus Faber

The Mac/Tannoy or Mac/Sonus Faber combo is tops so maybe sell your current speakers and don't look back.

-1 on Furman Elite reference... I had the Furman it reference 15i and found sound noticeably better when amp was plugged into the wall. YMMV. Now have a AudioQuest Niagara 7000 and notice no difference when amp plugged in to it. A 3000 or 5000 would also do the trick. 

Also using a Sbooster for a Lumin T2