Experience powerful bass without sacrificing space with the. In Phase USW10 300W Underseat Subwoofer. This compact unit, measuring just 69mm in depth and 270mm in diameter, is a pocket powerhouse of audio performance. The built-in amplifier and aluminum coned subwoofer deliver a max output of 300W, ensuring a robust bass punch. Measuring only 69mm in depth and 270mm in diameter, this unit fits effortlessly in any vehicle location, making it ideal for those who crave impactful bass without compromising space. Enjoy it as a basic upgrade or as part of a premium audio system. Its easy installation accommodates both factory and aftermarket systems, using High-Level and RCA input. Subwoofer: 300W Aluminum coned woofer with soot black rubber gasket. Amplifier: Compact and Powerful Built-in. Inputs: RCA and High-Level inputs, compatible with OEM and Factory Fitted headunits. Connections: Includes necessary wiring. Dimensions: 270mm (D) x 69mm (H). Remote: Bass remote included. Maximum Power Output: 300W. Rated Power Output: 100W. Output Impedance: 4 Ohm + 4 Ohm. Phase Button (0-180 degrees). Remote Level Control (5m). Die Cast Aluminum Chassis. Upgrade your audio experience with the In Phase USW10 for a compact yet powerful subwoofer solution.