The NX5 will deliver 120 x 4 @ 4 ohm stereo and 800 x 1 at 1 ohm mono...
For reviews please google the NX5 as there are lots of reviews and talk about the Nano Series.
For one in particular on NX5 look at http://www.caraudio.com/forums/amplifier-reviews/496920-massive-audio-nano-amplifiers-nx5-nx4-n2-review.html
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