For the true Audiophiles here…
A little light reading (jokingly) overview and technical reference, If you wish to extract the best technical audio performance from your playback system, whether it is simple, or as complex as networked audio distribution, you will get you there, with a diligent implementation of the technical insights outlined in this 2012 Audio Engineering Society (AES) paper by:
Bill Whitlock, President
Jensen Transformers, Inc.
Life Fellow, Audio Engineering Society
Life Senior Member, Institute of Electrical & Electronic
An Overview of Audio System Grounding & Interfacing: