Possibly the least understood problem encountered during the construction of a recording studio is the powering and grounding of the equipment. While the arts of acoustics, monitoring, and equipment, design have been studied extensively it seems that the art of studio powering and grounding has been left to the "Black Art" category. As an appendix I have included a short discussion of current differential technology being used in professional recording equipment. While many readers will sigh relief that their opinions concerning transformers have been proven true, the remainder of the readers will have their eyes opened.
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