Sometimes audio components sound far better on the same star grounding scheme. So by splitting your system across two separate lines back to the breaker box, some type of ground loop issue is occurring.
Have you tried feeding everything using the one power point, and does that make any difference?
Re: Hospital grade wiring, I would ditch it. Hospital grade does not mean good. For example hospital grade duplexes means a duplex that can withstand constant water splashing from cleaners washing the hospital rooms each day. In order to not corrode from the water, the metal in a hospital duplex must be all nickel plated, which is the worst sounding plating for audio systems.
This is a good example of how 'hospital grade' is good for its stated application, but awful for high end audio.
Have you tried feeding everything using the one power point, and does that make any difference?
Re: Hospital grade wiring, I would ditch it. Hospital grade does not mean good. For example hospital grade duplexes means a duplex that can withstand constant water splashing from cleaners washing the hospital rooms each day. In order to not corrode from the water, the metal in a hospital duplex must be all nickel plated, which is the worst sounding plating for audio systems.
This is a good example of how 'hospital grade' is good for its stated application, but awful for high end audio.