Stereo 2-Way or Mono 3-Way : Linkwitz-Riley Alignment with 24 dB per Octave Slopes : Adjustable Delays : Mono Subwoofer Switch and Output : Infrasonic, Ultrasonic, and RFI Filters : Low Output Muting (2-Way) : Input & Output Level Controls : Fully Active Balanced XLR Inputs & Outputs : Internal Universal Power Supply (100-240 VAC)