QED Performance Audio Y-Subwoofer AdaptorA high quality single phono socket to dual phono plug 'Y' adapter The Performance Subwoofer Y adapter is designed for use with active subwoofers that require both left and right channels to be connected for best performance. It can also be used wherever a signal needs to be split between two pieces of equipment such as when bi amping. Includes Oxygen Free Copper conductors and dual magnetic shielding for enhanced signal integrity to ensure that you