Custom designed AMP & DSP mounting plates allow you to install either an amplifier or DSP in the factory power unit location in the fairing. These mounting plates are designed to fit the following Amplifiers: Soundigital 400.4EVOX2, 800.4EVOX2, 800.1EVOPS, & 800.4EVOPS. These mounting plates were also designed to fit the following DSP's Rockford DSR-1 & HKI Mini.