The XO-34 from Marathon is a professional-quality rackmount crossover that provides precise low, mid, high, and subwoofer controls for a 3-way stereo system, as well as 4-way mono operation. Each of the 2 channels features separate knobs for low, mid, and high gain control, as well as crossover frequency selector knobs for low/mid and mid/high. Each channel also features a 30Hz low cut filter and a pair of phase reverse switches. The subwoofer channel also offers frequency selection and gain controls, as well as a 30Hz low cut filter. The unit features XLR and 1/4" I/O connectors for compatibility with a wide variety of audio components and systems. Features Offers 3-way stereo and 4-way mono operation Each channel has separate knobs for low, mid, and high gain control Separate subwoofer gain control Individual crossover frequency selector knobs for low/mid, mid/high, and subwoofer 30Hz low cut filters for stereo channels and subwoofer Individual phase reverse switches on channels 1 and 2 XLR and 1/4" I/O connectors for compatibility with a wide variety of audio components and systems Specifications Filter Type: 3-Band Operating Modes: Stereo and Mono Crossover Frequencies Subwoofer: 50 - 250Hz Low/High: 250Hz - 6kHz Gain Range: Not Specified by Manufacturer Controls 1 x Power Switch 5 x Crossover Frequency Knobs 2 x High Gain Knobs 2 x Mid Gain Knobs 2 x Low Gain Knobs 1 x Subwoofer Gain Knob 3 x Low Cut Switches 4 x Phase Switches Connectors 3 x XLR/TRS Combo Inputs 3 x XLR/TRS Combo Outputs Maximum Input Level: Not Specified by Manufacturer Maximum Output Level: Not Specified by Manufacturer Frequency Response: 20Hz - 25kHz (+0/-1dB) Signal to Noise Ratio: > -95dB Total Harmonic Distortion (THD): 0.05% Power: 100-240VAC, 50/60Hz, Selectable Dimensions (WxDxH): 19 x 5.75 x 1.73" (483 x 146 x 44mm) Weight: 4.2 lbs (1.9kg)