The Neumann AC 31 is a connector cable used to connect a miniature microphone system (MCM) either to the MCM 100 output module for wired XLR operation or to a wireless transmitter with a 3.5mm microphone input for wireless operation.
The 1.8-meter long cable is reinforced with Kevlar for maximum strength and high flexibility. It features a proprietary locking connector on one end and a locking 3.5mm plug on the other.