The Shure SCM810 is a professional 8-channel automatic microphone mixer designed to intelligently manage multiple open microphones in complex conferencing, presentation, and performance environments such as large boardrooms, council chambers, courtrooms, and houses of worship. Its primary function is to control which microphones are active at any given time using sophisticated gain-sharing algorithms, automatically opening channels with a speaking participant and closing idle channels. This automatic gating significantly reduces the cumulative problems of having many microphones open simultaneously, including increased background noise, excessive room reverberation, and a heightened risk of acoustic feedback, resulting in significantly clearer and more intelligible audio for both live reinforcement and recording. Operation is engineered to facilitate natural, multi-party conversation without requiring constant manual intervention. The mixer features fast, transparent activation and release times that respond to the dynamics of speech, ensuring no word is missed. It includes comprehensive manual override controls, allowing an operator to lock specific channels open for a continuous presenter or to mute them entirely.

The unit provides both a mixed mono output and individual channel outputs (via a DB-25 connector), offering exceptional flexibility for routing to recording devices, language translation systems, or additional processing. Each channel includes adjustable input gain, a low-cut filter, and a Last Mic Lock-On function that holds the most recently active channel open for an adjustable period to accommodate pauses in speech. Housed in a single rack-unit metal chassis, the SCM810 is built for reliability in permanent installations. It is a sophisticated, set-and-forget solution that dramatically improves audio quality in multi-participant settings by automating the critical and complex task of microphone management. This allows all participants to be heard clearly and consistently, fostering effective communication and making it an indispensable tool for large-scale professional conferencing and sound reinforcement systems.