I believe that the Marantz is not capable of running in bridged mode, so it is a moot point. However, I can tell you for sure that the NAD running in bridged mode was a VERY dynamic and good-sounding amp. When mated to an NAD 2150 power amp in bridged mode I had a VERY good-sounding and ballsy setup for not much money.
-RW-
-RW-