@aotles -
I personally run a Datasat RA-2400 (2 x 400watt at 8 Ohms) through it, with a HDPlex 300watt linear power supply(for the server), my DAC, and a few low watt devices. No doubt you're aware there's individual filtering on each outlet, so nothing introduces noise back into anything else.
I have not got switching power supplies, so I cannot tell you if they would introduce any noise, but were I a betting man, I'd guess not.
It doesn't skip a beat, there's no loss of dynamics that I can hear. The noise floor is extremely quiet, and I'm not even using the groundmaster at the moment.