Matrix Switch 16 x 16 Analog Audio Router with Butt MSC-XA1616L
Amazon.com: Shure BLX4R Single Channel Rack Mount Wireless Receiver with Frequency QuickScan, XLR and 1/4-inch Outputs - for use with BLX Wireless Systems (Transmitter Sold Separately) | H8 Band" : Musical Instruments
Swisson XWL Receiver W-DMX, 5-pin XLR - Splitters, Wireless, More | New Lighting