I haven't got one at home at mo. Marantz keep putting supply date of a new one back, so spoken with Peter Tyson and they're sending me an ex-display.
I'm starting from nothing so perhaps not the best judge, all I know its way better than the PS3 & soundbar I had.
I will be using it with Monitor Audio BR5s (front), MA BR1s (rear) and a BRW10 / BRLCR.
I fancied the NR1501 cos its about half the height of most other amps and seemed a good match (aesthetically as well) to the BDP. Wanted a universal player as didn't want to keep a sep hi-fi and the Marantz items seemed a good budget fit.
The amp is due on Tuesday, so I'll know how it all sounds in my lounge from then.