Now this is very crucial and underrated by too many music lovers. Consider having your electrician install one or more separate dedicated copper grounding rods for your high end system. Again, separate grounds dedicated just for your digital gear.Grounding rods?
This is a Bad Idea. The grounding should be according to code- otherwise all sorts of noise problems can emerge, not to mention outright shock/fire hazards.
In addition, such grounds would not somehow filter out 'digital noise'. To do that, some sort of isolation and filtration would be required, and independent dedicated lines provide neither!