Recommended integrated amplifier for upgrade

I recommend Audio Reseach… Luxman is also a good consideration. Unless, you only listen to rock I wouldn’t think of Mac. There are two “known pairings” with SF, Audio Research and MAC.

I have now owned three pair of Sonus Faber: Cremona, Olympica 3, and now Amati Traditional. With Audio Research you get a large soundstage, with great details and fully bloomed midrange and bass… incredibly musical. With Mac you get lots of midrange and more bass, minus the details, (my system under my ID… you can see my love of Audio Research).

I have heard the  VSi75 a number of times… it is so emotionally involving and simply beautiful to listen to… I want to buy one… but I have no where to use it. If I were you I would find a way to listen to it. From your description of what you want, this would be it… either you will buy it on the spot, or move on to Luxman.

To @pesky_wabbit

Topping bested only by the Benchmark AHB II. I love my Benchmark, but bought a different variant of the Topping circuitry, 150 watts into 8 ohms, for my studio system, and it just kicks butt. Buying amplifiers by the pound is soon to be a thing of the past.

"Conclusions
It is abundantly clear that ton of great engineering has gone into the design of Topping PA5. It breaks all barriers as far as noise and distortion, not only in its own budget/desktop class, but way, way outside of that. If it had double the power, it would obsolete all of them and in a hurry! As it is, I would certainly use it in a desktop or secondary system. And even primary if you are not going to blast the volume with super inefficient speakers.

It is my absolute pleasure to recommend the Topping PA5. The dynamics of stereo amplifier market just changed folks!"

´´  Omit nothing, add nothing.  ´´
Soulution INT 330   
Class A

https://soulution-audio.com/series3/soulution-330-integrated-amplifier/

Of course, McIntosh is the answer with Sonus-Faber. Integrated, I would look at the MA-2275. Not easy to find but a work horse of an integrated amp. No issues after 15 years except for tube change and a simple dial exchange.