Bluetooth connection and control of DSP settings via iOS or Android Smartphone AppFreely configurable 3-way active crossover: High- / Low- / Band- / Bypass with6/12/18 / 24dB / Oct. SlopeTime Alignment in cm (0 – 400cm) for front, rear and subwoofer channel5 channel control: Gain, Phase switch and Mute function for each speakerFreely configurable 7-band parametric Equalizer for front, rear and 4 speakerCan save 5 memories in the amp and unlimited sound settings on the smartphoneDynamic Bass setting for powerful performance without subwoofer3D surround sound