The In Phase USW300 Compact Under Seat 300W Active Amplified Powered Subwoofer is a sleek black rectangular subwoofer with an 8-inch size, perfect for fitting under seats or in spare wheel recesses. This subwoofer boasts an impressive 130W RMS power output and 4? Impedance, delivering powerful bass for an enhanced audio experience. Manufactured by In Phase, this aluminium subwoofer comes with an amplifier for added convenience. Ideal for vehicle enthusiasts looking to upgrade their audio system with a compact and stylish subwoofer.