With DSP and App-Control Ideal bass supplement for SRX812P, SRX815P and SRX835P Speaker: 2x 18" DCD sub woofer (3" coil) 2,000 Watt amplifier Maximum thomann performance, high reliability and low power consumption Fast SHARC DSP Extensive possibilities for signal adjustments LCD display for easy operation Regulation and control via network and app for Android and iOS Scratch and impact resistant Duraflex lacquer Attachments for casters included on rear side M10 Mounting point Lockable socket for power cable