Technical Pro P1500D System Pair of 1,500 Active DJ Speakers. That&apos;s 3,000-Watts total! Line Inputs: RCA (Unbalanced), XLR (Balanced), USB Flash Drive, SD card Unique horn design for ultra-wide sound dispersion Bass and treble controls USB / SD Card Support: 32GB max, .mp3 & .wma files 50Hz-20KHz frequency range (-10 dB) Separate volume controls for microphone input, line input and USB/SD Card input