This Neumann AC-20 5-Pin XLR Female to 2 3-Pin XLR Male Adapter Y-Cable is an adapter Y-cable with a 5-pin XLR female plug at one end and two 3-pin XLR male plugs at the other end. It is used to split two-channel signals into two mono channels, when using, for example, the BS 48 i-2 power supply.
