I'm far from a true audiphile, but when the Diablo's were hooked to Krell amplifiers (300 or 400 watts each) they were simply amazing to me. When the store sold the Krell amps and replaced them with with the Asthetix, I've been disappointed with the sound ever time I've been in since. Don't get me wrong, it all still sounds great, just not what it was. I've heard both amps hooked to Focal speakers ranging from 706v, Diablo & Grande EM and the Asthetics just made everything a bit more harsh to my ears...sort of the analog vs. digital difference.
I've talked to several other customers that have the mini monitors and love them.