Some have reported overly-clinical sound in the past but the new op amp design appears to have addressed this complaint.
And it it does to some degree but at the end of the day I still find class d amplifiers not my cup of tea.
The midrange and the highs aren't quite right to my ears for the overall sonic presentation that I prefer.
I also don't need anywhere near that kind of pwr with my DI's.
The MZ2S can easily drive them to the mid to upper 80's in db levels at my seated location 10 ft away and still have a little headroom.
My room size is 20x25x9 with a open kitchen on one end.
If I listen to some types of classical and classic rock,I do need a little more pwr,but I already own several amps for that and just got today a Zotl 40 that I will be trying out.
I do love the technology of class d and I think in the next 10yrs or so they will elvolve enough and probably be really good.
You might actually like the nords in your system and there is only one way to find out and that is to try one.They are popular enough they would still retain resale value if you didn't like them.
Best,
Kenny.