Audio matrix with IP connection and monitoring functions, for complete management of Public Address and Voice Alarm systems according EN54. Main component from COMPACT SYSTEM control system. IP audio channels (4), for local microphone, global microphone and prerecorded messages. Three built-in analogue audio inputs (one frontal USB). Monitoring of loudspeakers zones and power amplifiers. Input for microphones with zones control connected in BUS. Emergency contact inputs & outputs, message activation or zones control. Card slots to extend the system with the necessary audio outputs. Audio outputs with individual volume control. OPTIMUS model ref. COMPACT.