Good outlet for amplifiers

To be clear, there’s nothing good about an outlet plate, especially a metal one coming loose and at best putting the ground up or down is a prayer to the angels at best.

The specialized sockets in a hospital have red plates. The pos- and neg- blades on equipment plugs are usually thicker than what you usually see and broad, so the fit is tight.  I've never seen one of those things get loose. This is making me think maybe I should rework what I have my setup plugged into, because the fit is not always that good. 

@peter_s said:

@jea48 That’s the word I was looking for. "Isolated Ground". Thank you! Can any/all of the recommendations above be wired as isolated ground? I think this is the case if one uses a plastic box for the outlets, or uses plastic washers and screws to attach to a metal box. Agreed???

Isolated ground? Therein an insulated green wire, Equipment Grounding Conductor, EGC, that is used for the safety equipment ground contact on an IG, (Isolated Ground) type receptacle. The green insulated, isolated, EGC is ran in the same raceway or cable as the branch circuit wiring current carrying conductors to the electrical panel the branch circuit is fed from? Is that what you mean?

Not an outdoors dedicated driven ground rod?

Here is an example of a Hubbell IG Hospital Grade duplex receptacle.

Note the IG EGC  green color ground screw and contacts are insulated, isolated, from the supporting back strap and the center 6/32 threaded hub on the front of the outlet that holds on the wall cover plate.

What is the branch circuit wiring ran in? Conduit? Or a Cable like Romex?

@jea48 Thanks for your attention.  Yes, as you described, there is a green insulated wire included in the run.  I will need to open things up to see if there is also a bare copper wire for grounding the box and to confirm that the box is metal... but I know we used an armored cable running on the outside of the wall to get this additional dedicated circuit to my amps, and so the armor on the cable acts as further shielding/ground, but is not the same as the green wire (isolated) ground. 

When I bought the house, the home grounding went to a water pipe, but the electrician added a outdoor rod. Unfortunately, I am convinced that the rod is sunk just in loose sandy soils rather than moist clayey soils, and I may look into relocating it to something with better grounding properties.

I appreciate your input - feel free to offer more.  If I buy the Furutech and want to maintain the isolated ground, I would need to snap off the metal strap that connects the ground lug to the mounting plate.  I assume this is doable???