It is in fact the same generation as the RZ70....
But the NR7100 has no pre-outs, and the amplifier section is the weak point, especially into 4ohm
AmirM runs most of his tests there into 4ohm....
The NR7100 really truly does not like to drive 4 ohm speakers
The Integra twin, DRX 3.4, has the same amps with a full set of pre-outs, and sounds great running as an AVP driving external amps. - I do use the internal amps for surround/height, in which role they do fine, but driving my 4ohm mains they did not do well... - with external power amps all is as it should be.