Ground Master City The Safe and Effective Way To Eliminate Ground Noise The Ground (or Earth) connection is the absolute reference for all of your vital system voltages. As such, it has to be as silent and stable as possible. The ultimate way to eliminate ground-line noise is to utilise a clean, dedicated earth, but this is fraught with myriad safety and regulatory issues and people who live in apartments and other urban environments can't drive an 8' copper rod into the ground.