Nice write up. You put a great deal of effort into this. Great contribution.
Just to expand. No criticism of @prof. I owned several generations of Sonus Faber speakers and I have heard several levels in the current line up…. And own Amati Traditional.
While some folks like the pairing of MacIntosh equipment with Sonus Faber, some do not. For my tastes, Mac / Sonus Faber is not a good combination. Mac is very heavy on midrange and bass, but completely lacks nuance of details on the upper end. This is why trebly notes pop instead of being part of the deeply detailed continuum of sound. So, if in the market for Sonus, I recommend really hearing them powered by Audio Research gear. You will hear its natural, detailed sound across the whole audio spectrum.
On one end there is Sonus Faber powered by MacIntosh and on the other is Sonus Faber powered by Audio Research. These serve very different markets.