About a month ago after trying multiple PC systems, grounding schemes, power cords, conditioners, and 2 locations, I floated the ground on my my PC (music server, HTPC, DAW, whatever the hell we call them these days).
Then I was going to add a linear supply that I have here, but I'm lazy, so first floated the ground which eliminated the EMI/RFI that was creeping down my AES cable to my external DAC.
I got a new expensive DAC and the noisefloor was worse than my $300 DAC which has an IEC socket; the $$$ DAC has AC wall wart. I would swap the DACs using the exact same power, single-ended RCa, and AES cable from PC. The $$$ DAC had at least 10db higher noise floor.
I floated the ground on the Mini-Torii and it's dead silent.
Does the Mini have anything like:
Edited: a 10 - 47 ohm resistor between signal ground and electrical ground will usually solve ground loops. This is a much better way than fancy ground loop isolators.
Now that the PC and Mini-Torii have floated grounds, if I attach their chassis' together with a ground wire, the noise returns. I'd like to make this setup safe as possible and not sure if that means grounding the chassis of each unit to Earth separately or what.
What's the grounding scheme in the mini like? I also had to reverse the + - at my subwoofer or it would short the signal coming off the Torii binding posts. Everything was sharing a common ground?
Everything runs into an Exactpower EP15 regenerator.