@aseaman007, My information came from a conversation with Rick Schultz. The magnetic field is constant as long as there is power feeding the MC-0.5. And it travels through all connected conductors, even back to the service panel via the neutral (return) wire.
If you’re asking me why my first try with the modules didn’t work out, I now know that I didn’t give them enough breakin time. They had a harsh top-end and I was moving them to different positions.
Now, with three modules at the receptacles, I experience a lower noise floor, a layered 3D image, and a smooth top-end. Plugged into the duplexes gives me the most dramatic effect. Next, is in a power strip, and the least was in my power conditioner. Rick confirmed my findings with his research.
I’ve seen the pics of 10 MC-0.5’s being used. That was when they were first introduced, but I have to believe there is a point if diminishing returns.