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Audio Adapters
Audio Interface



1 Channel Audio Line Level Interface Preamp with 12Vdc Output

IF-1/LE-328 is a one-zone audio interface preamp. It is an interconnection hardware device between a Louroe line-level microphone and an NVR, IP camera, encoder, or recorder that provides power. Extends a Louroe single Line Level microphones up to 1,000 ft. providing an additional 10db of gain.

  • Single channel audio interface preamp
  • Provides 12Vdc power to all Louroe line-level microphones or 3rd-party hardware
  • 0-10db Adjustable volume control
  • RCA and 3.5 mm stereo audio outputs
  • Compatible with most recording devices that accept line-level audio input

Power and Cable Connectivity:

  • Requires 12Vdc external power, AD-1 (Included), DC Power Supply AD-1, LE-242, Click Here)
  • For long cable distances or making your own custom cable assemblies, use Belden 8451West Penn 452, or similar 1-2 conductor shielded cable for audio connectivity

Technical Design and Project Layout Support

Need help with using Louroes products/technologies in your projects and designs? Need us to look at Architectural Drawings and Plans? Our engineering staff can provide you with valuable information, and support to your business and employees by helping with all your projects/proposals. We will assist you from start to finish with cost-effective solutions for your success.

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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

1 X IF-1, 1 x AD-1 12Vdc power supply, 1 x RCA M-M Cable, 1 x M-M 3.5mm Stereo Cable, RCA to 3.5mm Plug (All cable lengths 6ft.)

Installation Requirements

For long distance connectivity, use BELDEN 8451 or equivalent shielded audio cable.


  • Encoders
  • IP Cameras
  • NVR
  • Recorders


Use Cases


Input Signal:
Line level
Input Connector:
3 Position terminal block, (A) 12Vdc output, (B) Audio input, (C) Ground
Output Signal:
Line level
Output Connectors:
1 x RCA jack, 1 x 3.5mm stereo jack
Adjustable Volume Control:
Power Input:
AD-1, Plug-in 12Vdc, 1.5A Switching AC Adapter, Positive Center
Power Jack:
2.1mm x 5.5mm DC coax
6.125″ L x 4.625″ W x 1.375″ H
1 lb

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Have a question about the IF-1? 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.
  Contact LAR Group
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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