2x2 Speaker Selector Switch Switcher Volume Control, Commercial Grade Brass Jacks Allows you to use two stereos with up to 4 speakers (2 pairs) with volume control. Built-in precision auto impedance correction and overload protection. Brass Gold Plated Banana Sockets accept up to 12 gauge wire. 100W RMS, 200W peak per channel power handling. Individual rotary volume controls.