Theater Solutions SA200 Passive Subwoofer 200 Watt Amplifier for Home Theater Theater Solutions SA200 subwoofer amplifier for an in wall passive sub, 200 watts peak power, frequency Response is 50 - 200Hz, output impedance is 4 or 8ohm Sub volume and crossover control knobs, LFE and RCA inputs for use with a home audio receiver, raw wire outputs, power supply is AC 18V, fuse is 3A / 250V Dimensions (HxWxD) are 2.25" x 8.5" x 6", 6 foot RCA cable, "Y" adapter, power supply and full instructions included Use for in wall or in ceiling home entertainment, home theater systems, surround sound systems and multiple room systems This listing and price is for one SA200 passive subwoofer amp