Niles HPS-4 Speaker Selector Power Handling: 250 Watts Per Channel RMSProtection Circuit Safeguards Receiver/amplifier Separate Left And Right Ground Paths For Compatibility With All AmplifiersRear-panel Switch For Constant Or Selectable Impedance Protection Removable Connectors Accommodate Up To 12-gauge WireRugged All Metal Chassis Construction Nonskid Feet Won't Scratch Furniture And Ensure Unit Stability During Operation72 Adhesive-backed Room Identification Labels 10 year limited Handles up to an awesome 250 watts per channel RMS Protection circuit safeguards receiver / amplifier Separate left and right ground paths for compatibility with all amplifiers, including bridged designs Removable screwless connectors accommodate up to 12 gauge wire Rugged all metal chassis construction