This digital subwoofer amplifier delivers sufficient power for up to two PSB subwoofers. The built in digital signal processor (DSP) allows the installer to create several EQ settings as well as containing profiles tailored for PSB subwoofers. A built-in limiter circuit filters the incoming information and keeps it from driving the subwoofer beyond safe operating parameters. It can be powered up by several means including signal sensing and 12 volt trigger. A rack mount kit enables the subwoofer amplifier to be mounted into a 1U rack space. The CS 500W gives the installer the necessary power and control to seamlessly blend subwoofers into any musical or theater environment.