The Meyers Sound SIM3 3081 is an 8-channel microphone-level switcher, designed as an accessory component for the SIM 3 Audio Analyzer System. This device allows for the expansion of the SIM 3's core functionality, enabling the system to manage and analyze multiple microphone inputs effectively. The 3081 facilitates switching between up to eight different microphone sources, making it a crucial tool for complex acoustic measurement and analysis tasks. It helps audio engineers and technicians gather extensive data in diverse environments, from large performance venues to studios, by streamlining the process of comparing multiple microphone signals.