* XLR balanced ins and outs * Mode switch for stereo 2-way or mono 3-way operation * Low frequency summed (subwoofer) output * x10 range switch on both channels * 40Hz high pass (low cut) filter both channels * Phase reverse switch on all outputs * Individual level controls on all outputs * 24dB per octave Linkwitz-Riley filters (the professional standard) * Stereo/Mono status LEDs indicate the selected mode * CSA NRTL/C approved