[ProAudio] Understanding the grounding electrode system (NEC article 250)

[Scott Dorsey]

Well, having a separately-derived ground system with its own ground rods
and a ground not bonded to the building ground IS a good idea for audio
systems.... it's just that you need an isolation transformer between the
main panel and the clean panel so that the grounds can be safely split.
And that transformer needs to be rated for sufficient fault voltage between
the two systems (as detailed in the NEC).  And hell, if you're doing that
you might as well include an electrostatic shield too.
--scott