ETS DNR-4E Four Channel Economy DSP Based Noise Reduction Module / Interface

Brand: ETS
Part Number: DNR-4E
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ETS DNR-4E Four Channel Economy DSP Based Noise Reduction Module / Interface

The DNR-4E is a DSP (Digital Signal Processor) based background noise reduction unit. It is designed to digitally screen out voice from other (back ground) sounds picked up by microphones. The DNR-4 is also effective in eliminating microphone pre-amplifier noise. The DNR-4 is directly compatible with ETS microphones, base stations, other "line level" audio sources and connects directly to DVRs, I/P cameras, etc.

The DNR-1 is a four channel digital background noise reduction processor. It is designed to connect directly to any SM1 series microphone (or any line level input signal) and a DRV, I/P camera, etc. Note- the audio output of the DNR-1 is “line level″ (0db).

Key features:

  • Standard RCA or 3.5mm jacks for connection to DVRs etc.
  • Adjustable input and output “line Level″ level controls.
  • ETS microphone or RCA line level input.
  • ETS base station or RCA line level outputs.
  • Euro-style connectors makes cable terminations fast and clean.
  • 500-4Khz Frequency response
  • Up to -40db noise reduction (depending on type of noise)
  • LED power indicator.
  • Power: 12VDC @ 100mA
  • Reverse polarity protected.
  • All power circuitry and cable runs protected with auto-reset type fuse.
  • Black plastic ABS housing.


All of ETS items are special built to order items. The moment the order is sent to ETS, they will start production/building. This will take around 1-2 weeks depending on the line of production, volume of your order, etc. Please plan accordingly. We will enter tracking as soon as it becomes available to us. If you have any questions feel free to contact the customer service team at or call us at 214-948-1300 x 411.

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