Vivien 4 Not super sure about the source of the violet noise I'm hearing. it could be from my sound card. But there is a certain amount of noise on the tweeter of my speakers.That noise is only audible when sticking your ear right to the tweeter. So it's not a problem at all, 4 stars. Actually, any HiFi system will have this sort of noise but I figured at the low volume level I set that amp to, I could have a cleaner sound. But appart from that small violet noise, it's all perfect. Love the minimalism!! really do. who needs these stupid treble/bass/balance/input setting you never use?