Behringer SUPER-X PRO CX2310 Crossover (Standard) The Behringer CX2310 Super-X Pro Crossover offers stereo 2-way or 3-way mono with subwoofer out and independent frequency control Phase reverse switch for each output. ALPS pots, illuminated controls, and ultralow noise op amps. 24dB/octave, state-variable Linkwitz-Riley filters.