The PLBASS2.8 is a 2-Channel low-profile Active Amplified Subwoofer System. Slim design allows for various and multiple installation options and can easily slide under most seats. This system offers you a quick and easy way to upgrade your audio system. This full range amplifier and amplified subwoofer system come with both high level (speaker level) and low level (RCA type) inputs, making this a universal solution for use with any head-unit or other input source. For further flexibility, variable Bass Boost controls were added. Easily control subwoofer levels with the remote level control module.