This is a special adapter to go from the PA mic input on a tour bus to a wireless headset receiver with a TS 1/4" connection
4 pin XLR Female (image shows X series XLR but now XX series will be used)
TS 1/4" Female
8" of wire: Mogami 2319
With Black shrink for durability
Pinout:
Pin 1 & 4 Tied for system enable
Pin 2 signal (tip)
Pin 3 signal low tied to housing for ground (sleeve)