DBX 223 Xs, Active Crossover, 2-Way stereo or 3-way mono, Mono sub out, 24 dB / Octave Linkwitz-Riley filters, Adjustable input- and LF/HF gain, Tunable centre frequency, x10 Range switch, Phase reverse switch, Switchable 40 Hz highpass filter, Balanced XLR in- and outputs, Format: 19"" / 1U, Internal power supply