Properly Connecting Balanced And Unbalanced Audio Equipment

I consider Bill Whitlock at Jensen Transformers one of the experts on proper analog audio interface design. He published a great article in the March 2002 edition of Sound & Video Contractor Magazine on proper audio gear connectivity, a subject matter I find still eludes many audio professionals today, entitled Mix-And-Match Intefaces. There's also some additional feedback on this article here where Mr. Whitlock goes into more depth on a reader's questions. He's got plenty of write-ups on correct grounding, shielding, and hum removal of audio systems.