Puritan PSM 156

Yes there is a separate grounding device available.

Goes between PSM156 and copper grounding rod.

I plan on buying one this Spring. Not pricey. Getting a copper rod into the ground in Minnesota right now would be a challenge.😊

@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.

All the sockets on the back are the same (i.e. none of them is designed/designated for particular types of equipment), so it's basically plug and play.

There are two models of grounding unit, one for apartments and one for homes with access to the ground outside.