the behringer mdx4400 multicom pro compressor/limiter features 4 independent channels of compression and limiting with interactive auto compression circuitry. mdx4400 multicom pro compressor/limiter features • 4 excellent compressor/limiter channels • switchable high-pass side chain filter • interactive auto-compressor circuit for musical compression • program-dependent attack and release times • ika circuit for "inaudible" compression • couple function for 2 channels each • separate led displays for input/output levels and gain reduction • servo-balanced xlr and jack connectors • additional peak limiter with igc (interactive gain control) and control led • high-quality potentiometer and illuminated switches • manufactured under iso9000 certified management system