Thanks for the review.
I have no experience with this one, but I used to own its bigger brother, the NAD C 326BEE. I liked its simplicity and ease of use, and sound was perfectly fine, but I had a couple of concerns/complaints with it.
One, it ran really hot - hotter than just about any amp/receiver I've ever owned. It didn't create any problems, but it was a little disconcerting. I definitely didn't want to put anything on top of it.
Two, a minor but important complaint I had was about the volume control pot. It was really quiet at with the knob around 7 o'clock and really loud with the knob around 9 o'clock. Just moving it a little changed the volume a lot, but then after about 9 or 10 o'clock, it was already so loud that it barely got louder. And if I used the remote to control the knob, it was extremely touchy because of this (would go from too soft to too loud with a slight touch of the volume up button). I really felt like they needed a different potentiometer with a different gain curve.
I have the same amp (326 BEE), got it brand new when it was on sale a few years ago, probably was getting discontinued soon at the time. The amp has the nice feature that allows one to use it as an integrated, preamp, or power amp. I like the amp so much, that I think I will keep it forever, though for curiosity, I wanted to try the $80 Fosi V3, so I decided to use one to replace the C 326BEE. The results, based on driving my original KEF LS50, is surprising (well, may be not..), as far as I could tell/hear, the LS50 sounds no difference whatsoever between the two amps. So being lazy, I didn't bother swapping the NAD back in, but I still won't sell/or tread it in., still like it so much, and will keep it forever.
Assuming the 316 BEE is basically the same, just a little less powerful and can be used as an integrated only, it would be highly recommended (by me) for those who can get by with 45 W at 0.01% THD+N 8/4 ohms, but then amps like the Fosi V3 amp would sound the same for much less money, just not as good/beefy looking.