The Behringer Dualfex Pro EX2200 is a rack-mountable multiband sound enhancer and exciter designed to improve audio clarity and punch for both live and studio applications. Key features include a "Natural Sonic" processor for musical sound improvement, a "Dual Mode" bass enhancer for both "soft" and "tight" low-end sounds, and integrated surround sound processing for enhanced stereo imaging. The unit uses VSP (Variable Sound Processing) circuitry for simultaneous enhancer and exciter processing