The Talk Back 600 MV adds talk back, monitor master volume, monitor switching and monitor dimming capability to recording consoles, digital hard disc recording systems and portable audio workstations. Intended applications include professional and project recording studios and video post-production facilities. It provides control room talk back to talent. Talk back microphone signal is mixed with auxiliary signals and presented into talent headphone monitoring system. Unit's features and specifications rival those found only in large format recording consoles. It allows to control talk back and monitor switching from front panel controls, RC-1 and RC-2 wired remote controls, IR-1 and IR-2 wireless remotes or any combination of the three.