all the negative comments are nonsense.
first of all the nait doesn't consume much power at all when idle. Yes, true, it seems to sound better when switched on. But you leave your fridge on too don't you? and your wi fi? and your phone charger? and your nas? and your home security alarm? etc etc etc.
secondly naim is all about bringing the music to life.
3d imagining is fine, but what's the point if the music is lifeless due to timing errors.
in naim the bass is in time with the treble and midrange.
how many systems can do this. not many.
as Naim themselves say : music is about people. If you can't hear what the people on the recording are doing, then there isn't much point.
Buy with confidence. You should be able to hear, clearly, what each musician and instrument is doing. that's what it's all about.
I own a naim separates system and it is worth every penny I spent on it.