A quick comparison of both units shows that strictly from pure power output, the NAD is rated at 60W/ch all 7 channels driven. The Marantz is rated at 125W/ch two channels driven. Don't be fooled by the 125W/ch spec. Marantz derates their multi-channel receivers to 70% of the stated power. I know this for a fact. That woiuld make the SR7005 87.5W/channel all channels driven, 20hz-20khz. The NAD sells for around $1300.00 and the Marantz $1600.00.
Regarding sound and performance, they're probably both excellent and comparable. Both are loaded with features and seem to have all of the state of the art sound formats. Of course, nothing replaces listening and auditioning both in the store.
Marantz offers a 3 year manufacturer's warranty. I couldn't find any warranty period at the NAD site. With a Marantz AVR I owned a few years ago, that 3 year warranty came in handy. I had to take the unit to a local service center for warranty work on the volume control. Cost me nothing.
Regarding sound and performance, they're probably both excellent and comparable. Both are loaded with features and seem to have all of the state of the art sound formats. Of course, nothing replaces listening and auditioning both in the store.
Marantz offers a 3 year manufacturer's warranty. I couldn't find any warranty period at the NAD site. With a Marantz AVR I owned a few years ago, that 3 year warranty came in handy. I had to take the unit to a local service center for warranty work on the volume control. Cost me nothing.