SCM410E microphone mixer,quality with brackets for 19 inch not in orginal box ,looks like new ,with 19 inch brackets good condition 4-channel automatic mixer dramatically improves audio quality in any application in which multiple microphones are required. Features include fast microphone selection, adjustable EQ, and clipping LEDs, and peak-responding output limiter. IntelliMix- the most advanced and effective automatic mixing algorithm available, incorporating: Noise Adaptive Threshold MaxBus Last Mic Lock-On NOMA -Number of Open Mics Attenuated - automatic gain adjustment as additional microphones are activated Inputs and Outputs - 4 balanced mic level XLR inputs, 1 balanced mic/line switchable XLR output, and 1 unbalanced RCA auxiliary output Automatic mixing is a tremendous problem-solving tool allowing sound system installers to eliminate common problems such as insufficient gain before feedback and muddy speech quality. Shure is the industry leader in automatic mixing with our unique IntelliMix technology. IntelliMix automatically gates microphones on and off to optimize sound quality in conference facilities, houses of worship, governmental institutions, schools, etc. The Shure SCM410 Automatic Mixer puts all the seamless performance of the 8-channel SCM810 - the recognized standard in automatic mixing - into a half-rack space. SCM410 Key Benefits: Increases the clarity and intelligibility of speech Dramatically reduces feedback, reverberation, and comb filtering Automates several rigorous operator functions Minimizes set up time - plug and play Frees up channels on the mixing console The SCM410 can be used as a turnkey mixing solution in a variety of speech applications: Fixed Audio Installations - houses of worship, schools, conference facilities, legislature, hotels Portable Applications - rentals, A/V carts, portable audio racks Interfaces with Crestron control systems will be well packaged