Unfortunately I haven't heard the argon 3S speakers, but their sensitivity at 87 dB certainly warrants a powerful amp. I just checked up on the evolution review, after your good selves mentioned it
I wouldn't exactly call it a enamoured review as such. Though I don't believe much in reviews lately, but a audition is a definite must sir.
But as @hifinutt
has mentioned, I would definitely try the KJF audio, and Nord class D amps, before considering the nuprime, if I were in the UK. If my memory serves me right @Lurch
is pleased with the Nord amps too. So maybe you can consider these alternatives too.
The newer class D amplification, seems to be gravitating towards the newest purifi and GAN designs. I haven't heard either. But class D is moving real fast, as are dacs and streamers. And when innovation happens at such a frantic pace ( or at least claimed), I tend to sit on the fence, till the euphoria fizzles out, and till there is a semblance of sanity. I don't like investing my hard earned money chasing the state of art, only to see it superseded in a quarter of a year. So if I were in the UK, I would buy a KJF or a Nord as of today
Just my 2 cents sir