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MLA-4 is a passive mixer for combining four microphones, or four speaker/microphones to one audio monitoring zone. It is mounted between the microphones and the Louroe Base Station. It has adjustment knob for microphone balance. The microphones are combined for zone expansion and are not on separate channels. The MLA-4 is powered by the Louroe Base Station.

MLA-4 is a mixer designed for zone expansion only. It is not a base station. It combines up to four microphones or four speaker/microphones to create a larger monitoring zone.

  • Four channel audio mixer (4-into-1)
  • Powered via base station or discrete power supply
  • 10db of Gain
  • Volume potentiometer for each channel
  • Effectively increases the audio pickup area without the need for multiple audio inputs on the base station, NVR, IP Camera, etc.
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5-Year warranty
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Audio Monitoring Notice

When this equipment is used as part of an audio monitoring system, the law requires that the public be given notice of AUDIO MONITORING ON THE PREMISES.
Two decal notices are included with each microphone shipped.

Federal Law References: Federal Regulations, US Code, Title 18, Crime and Criminal Procedure. Sec 2510.


What's in the box

MLA-4, AD-1, Single RCA Cable (6ft.)

Installation Requirements



  • All Louroe base stations
  • NVR


Use Cases


6.125″ L x 4.625″ W x 1.375″ H

Product Comparison

96 products
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12Vdc Power Supply Included
Audio Outputs
Audio Streaming
Audio Type
Compatible with Most Recording Devices that Accept Line Level Audio Input
Install Environment
Mutli-Zone Audio Interface
Mutli-Zone Audio Mixer
Provides 12Vdc Power to Line Level Microphone
Provides 12Vdc Power to the Microphone
Single Zone Audio Interface
Thermal Overload Protection
Voltage Requirement
Volume Control to Prevent Overdriving
Volume Potentiometer for Each Channel
Wire Type

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Have a question about the MLA-4? Contact us directly.
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How to Buy

United States and Canada
Louroe sells products through a network of dealers and distributors across the United States and Canada. Find your local Louroe Distributor on the locator portal.
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Latin America
Please contact LAR Group, the Louroe representative group for Latin America including the Caribbean.
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Other Worldwide Regions
For regions outside of North America, Latin America and the Caribbean, please contact Louroe directly at (888) 265-8474 or via email on our contact form.
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