High Quality Metal RCA Female to 3 PIN XLR Male Adaptor. | This adaptor is designed to adapt a phone plug to an XLR input, XLR pin 3 is grounded resulting in an unbalanced signal. | Connection A: 3-Pin XLR Male Plug ; Connection B: RCA Female Jack. XLR PIN-1 and 3 are tied together and carry the Ground via the Chassis, this connects to the Surround of the RCA. | The Housing for high strength zinc alloy die-casting nickel plating, attractive and durable. | Protective Shielding for RF and EMI noise elimination.