Had a demonstration of the Synergistic Research one in my system a few years back.
However, just try to think logically about it, all your equipment is already connected to ground via its power cord if designed properly. So all you do by adding a second ground connection is adding a ground loop - which are no good. In case you have double insulated equipment, indicated by a pair of squares, one inside the other usually by the ac inlet, and equipment usually supplied with a 2 pronged power cored, you are connecting "nothing" to ground.
I you really want to know about proper grounding I'd encourage you to read this paper.
Bill Withlock Ground Papers
Good Listening
Peter
However, just try to think logically about it, all your equipment is already connected to ground via its power cord if designed properly. So all you do by adding a second ground connection is adding a ground loop - which are no good. In case you have double insulated equipment, indicated by a pair of squares, one inside the other usually by the ac inlet, and equipment usually supplied with a 2 pronged power cored, you are connecting "nothing" to ground.
I you really want to know about proper grounding I'd encourage you to read this paper.
Bill Withlock Ground Papers
Good Listening
Peter