Louroe Audio Monitoring MLA-6 Microphone (or speaker/microphone) mixer for combining up to six microphones (or six speaker/microphones) for zone expansion. It is located between the remote units and the Louroe Base Station. Contains a power amplifier to compensate for amplitude loss, and allows for cable runs up to 5,000 feet between MLA-6 and base station. NOTE: MLA-6 is a mixer designed for zone expansion only. It is not a base station. It combines up to six microphones (or six speaker/microphones) to create a larger monitoring zone. IMPORTANT: If cable run between MLA-6 and Louroe Base Station is under 1,000 feet, MLA-6 is phantom powered from the Louroe Base Station. If cable run is between 1,000 feet to 5,000 feet, 12 Vdc, 300mA power is required at MLA-6. Request Model AD-1 power supply. Dimensions: 8 inch L x 7 inch W x 3 inch H