G'day Notes,
Quote:

I use a USB to Audio interface. <snip> ...and I've never had a hum or ground loop issue with it.




Thant's a very good and interesting point. I thought about it for a moment then I remembered: the USB interface is a current loop - NO ground reference, therefore (probably) no ground connection thus no ground (or earth) loop therefore no interference from it.

A little more expensive than a ground lift/disconnection but potentially safer...


--=-- My credo: If it's worth doing, it's worth overdoing - just ask my missus, she'll tell ya laugh --=--
You're only paranoid if you're wrong!