The Behringer MULTICOM PRO-XL MDX4600 is a great rack unit for live music on the road. A high-pass filter in the sidechain keeps the sound full and bright. Integrated dynamic enhancer, and low-contour filter provide the utmost in signal enrichment. Interactive auto-compressor delivers extremely musical processing. Program-adaptive attack and release times provide precise sound. Also includes link function for channel pairs, separate displays for in/out level and gain, peak limiter, illuminated switches, and servo-balanced XLR and 1/4" I/O. Single rackspace.