The DBX 223XL stereo 2 way/Mono 3-way crossover. Ideal for live concert and club sound applications, the 223XL delivers accurate, wide-bandwidth and low-noise performance.The DBX 223XL panel controls include left and right Channel crossover frequency selectors, output level controls and phase reverse/channel mutes switches. Front panel LEDs indicate when x10 switches on the back panel are activated and whether the unit is in stereo or mono mode. Recessed 40Hz low cut (HPF) switches on each channel let you remove unwanted low frequencies for better system performance. All front panel rotary controls feature detent settings for more precise frequency and level adjustments. For superior sound quality, the 223 features high-performance, 24dB per octave Linkwitz-Riley filters and DBX's advance low-noise circuitry. The rear panel offers balanced XLR connectors for all input/output connections. A low-frequency mono sum is also provided for use as a subwoofer feed.DBX 223XL Features: Balanced XLR ins and outs that ar Stereo 2-Way/Mono 3-Way Crossover - with XLR connections.