Yes the that’s what i have heard from some people.... I will find out because my
Marantz Ref PM10 is class D.....
Yes this Marantz uses the same N-Core 500 modules as the Dragon and M600’s, so your not really upgrading but rather going sideways with these.
https://www.us.marantz.com/Assets/Images/Products/PM-10/PM-10_optimized_a.jpg
Cheers George