The Hill Audio RPX-2300 is a stereo 2-way/mono 3-way active crossover, designed for better sound and protection by multi-amping a sound system. With a flip of the rear side switch, the unit can be configured either in stereo 2-way or mono 3-way mode, while the front panel status LEDs visualize which control has which function assigned. The incoming signal is divided into relative frequency bands via precise Linkwitz-Riley filters, which sport seamlessly adjustable crossover frequencies, and offer best driver protection by their steep 24dB/Octave slope. For further protection, 25 Hz Low Cut filters are provided to eliminate inaudible high-energy bass content. The unit also offers an independently-adjustable subwoofer output, providing an extra low-frequency band in a control range from 10-235 Hz – making it effectively a 3-way stereo or 4-way mono active crossover. Mute and Phase Invert switches for all outputs make troubleshooting a breeze. Compared to digital loudspeaker management systems, the RPX-2300 is not only more affordable, it also offers greater ease-of-use and a full 20dB signal headroom that only an analog processor can provide.