DB TECHNOLOGIES SUB 612. Active subwoofer with 600W RMS Class D amplifier, 12" LF driver with 2.5" moving coil, 129 Db of maximum SPL, omnidirectional directivity, SMSP digital amplifier with 2 balanced XLR inputs and 2 outputs, Output Link/Xover selection button, polarity selector, Subwoofer mode with 2 selectable Eq modes, integrated limiter with status LED and output volume
control.