It's XLR. But even then Americans and Europeans couldn't agree on where to stick the three wires. This is the 1992 document that finally standardized "pin 2 ho

It's XLR. But even then Americans and Europeans couldn't agree on where to stick the three wires. This is the 1992 document that finally standardized "pin 2 hot" among other minutiae: http://www.aes.org/publications/standards/search.cfm?docID=19 http://www.aes.org/publications/standards/search.cfm?docID=1...