MLA-4 Microphone mixer with four audio inputs and one audio output. It is designed to combine up to four microphones or up to four speaker/microphones to expand the listening area of an audio zone.

The MLA-4 is located between the microphones or speaker/microphones and the Louroe base station. In addition, it has a line driver amplifier that allows for runs up to 5,000 ft. between the MLA-4 and the Louroe base station and up to 1,000 ft. between the MLA-4 and the remote microphone or speaker/microphone for a total of 6,000 ft.