High-Precision Stereo 2-Way/3-Way/Mono 4-Way Crossover with Limiters.Professional high-precision stereo 2-way/3-way/mono 4-way crossover World-class performance Linkwitz-Riley filters with 24 dB/octave Absolutely flat summed amplitude response, zero phase difference Individual output Gain controls for all bands Individual Limiter on each output for optimal loudspeaker protection Individual output Mute switches for easy band adjustment Individual Phase reverse switches for instant phase correction Switchable 25 Hz Low cut filter on each input for low-frequency driver protection Low Sum function provides low-level mono output for subwoofer operation Adjustable time delay for phase alignment between drivers CD horn equalization for constant directivity horn compensation Servo-balanced, gold-plated XLR connectors for all inputs and outputs Ultra high precision potentiometers for ultimate accuracy and repeatability Ultra low-noise 4580 audio operational amplifiers for outstanding sound performance Illuminated switches for secure operation in dark stage environments Shielded toroidal mains transformer for minimal noise interference High-quality components and exceptionally rugged construction ensure long life Conceived and designed by BEHRINGER Germany