So I'm looking upgrading my power source. I'm not keen to spend the kind of dough on a Cioks, especially as the feature set here looks like it'll cover my needs perfectly and save a good amount at the same time. Anyone using one of these? Are the outputs truly isolated in each instance? I'm getting a nasty hum which isn't so bad through speakers but terrible when going DI. I'm hoping this would resolve my issues without having to have multiple power adaptors to control the ground loops.