The OMNITRONIC XO-300 is an active stereo 3-way crossover for splitting audio signals into low, mid and high frequency bands. It uses variable 24 dB-per-octave Linkwitz-Riley filters, with adjustable low/mid and mid/high crossover frequencies. The unit provides individual output level controls, muting for the input and each frequency range, switchable low and mid phase, selectable CD horn EQ, balanced XLR connections and 19-inch 1 U rack mounting.