USED LD SYSTEMS MAUI 11 G2 Portable Column PA System with Mixer and Bluetooth dcpro preserving your sound without adding preserving your sound without adding unwanted noise during transmission This high quality pedal features a polarity switch making it universally compatible with virtually any keyboard It reduces reflections from the floor and ceiling and prevents sidelobe levels and thus achieves a homogeneous dispersion Your audience hears you in the back row just as clearly as in the front The DynX® DSP technology from LD Systems provides top class performance each time and the highest level of freedom from distortion