I don't have Spatials (yet), but I just got a great deal on a dealer demo NAD M10 and am absolutely blown away with its performance driving the inefficient but great sounding ELAC Uni-Fi 2.0 bookshelf speakers. It is Class D, but I think it sounds way better in my room than my sister-in-law's Naim Unity Atom, and the Blue OS interface works amazingly well. The NAD M33 was named stereophile product of the year for 2020, and the M10 looks to share most of its features in a still-powerful 100wpc instead of 200wpc. When discussing the M-series with Clayton, he said they tested them with the NAD M10 and assured me it would sound great. Same feedback from Ron at New Record Day, which is what tipped me off. Oh, and it is has DIRAC room correction built-in which the Naim doesn't. The only thing I dislike is that the analog inputs are digitized, but that is the only way that DIRAC can be used on an analog source.