My only negative observations are (2)
A. Unit runs on the hot side, make sure to provide enough free-air clearance for the L/R sides and top
B. Marantz failed to provide enough DSP resources to handle 96kHz
If one is using Audyssey the stream is down sampled to 48kHz, one would think that for its high cost, more DSP power would have been utilized.
Just my $0.02... 👍😉