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The NR800 is a real-time noise reduction processor, useful for music production, post production, and live sound.

The NR800 operates with no internal latency, and does not contaminate the original source material with artifacts such as those found by noise reduction plug-ins that utilize transform-based processing.

The NR800 operates on mostly broad band frequencies, but can also be focused in a narrow portion of the frequency spectrum using noise reduction focus points. A set of input filters and be configured with slopes up to 36 dB/Oct, and can be set at frequencies independent of noise reduction focus points.

Several noise reduction modes can be selected from the NR Mode control to provide a range of smooth to aggressive noise reduction amounts. A Range control can be used to scale the overall noise reduction from 100% to 0% (off). An ‘x2’ mode will also double the noise reduction amounts in all bands, when less finely tuned adjustment is needed, or when noise problems are severe. The Response time controls how fast the noise reduction recovers from a ‘noise event’. An NR Bias selector allows different noise reduction amounts to be activated when ‘snapping’ the noise reduction gain and thresholds to the input signal.

Each of the 8 bands in the NR800 has a noise reduction amount fader and noise detection threshold marker, and the usual McDSP linking control capabilities from a master (M) and linked (L) control button paradigm. Each band may also be individually bypassed or soloed to audition incoming noise amounts.


  • HPF and LPF pre-filtering
  • Eight bands of focusable noise reduction
  • Noise reduction mode and bias options
  • Overall noise reduction range and response control
  • McDSP Emmy Award winning engineering
HD v6: AAX DSP/Native, AU, VST
Native v6: AAX Native, AU, VST

Introducing the NR800 Noise Reduction Processor

NR800 Noise Reduction Processor Tutorial

NR800 Drum Leakage Examples

  • Morrone

    Frank Morrone

    Award-Winning Re-Recording Mixer
    The NR800 is an important part of my dialog chain. It works seamlessly in the background keeping the noise floor down while maintaining the integrity of the dial. If I do need to get more aggressive it gives me the flexibility to zero in on the noise and still make the dial sound natural. Thanks McDSP. Another winner!

  • Marks

    Tom Marks

    CAS / Re-Recording Mixer for Sense 8, Breaking In, and many others
    With 8 bands of control and variable high & low frequency limits, I’m able to address the frequency areas that have the worst noise issues while the other bands have less or no reduction. The end result being, better sounding dialogue.

  • Landon

    Dean Landon

    … I’m completely amazed that it will remove the unwanted noise, yet retain the sound. Other NR plug-ins will either add artifacts and change the original sound. Not the NR800. I’m always on a deadline, so I need something that will work quickly. With the 8 adjusting noise reduction bands including the HPF and LPF, I was able to remove the offending noise with ease and without disrupting my workflow. Definitely a keeper!

  • FilterBank E670

    NR800 Noise Reduction Processor

    Despite efforts to make recordings as clean as possible, noise contamination can still occur. By golly its about time McDSP did something about it. Say goodbye to noise. Say hello to the NR800 Noise Reduction Processor…
    Read more

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