I'm on my second Magni and I'm still battling noise. It's a sporadic, low, static-y, scratching noise that almost sounds like electrical interference. I'm pretty sure it's the Magni as I can hear it with the Modi disconnected. I've had the Magni plugged into a power strip and directly into the wall with no change. Other amps I have do not do this.
Any ideas? RF interference? Phone? Router? Power issue?
It happend to me too!
My problem was the the Magni was plugged in a power strip not directly into the wall outlet..
Then also the phone had strange interference...