Boss BASS900 8 inch Low Profile Amplified Subwoofer with Remote Subwoofer Level Control (Discontinued by Manufacturer) Amplified 8-inch subwoofer enclosure with 900 Watts peak power 12dB bass boost circuit with included bass boost remote control Subsonic and Low-Pass filters for optimizing your system Thermal, Short and Overload protection Adjustable input sensitivity to match most receivers