Fix Motu M2 / M4 Crackling with Equalizer APO

Problem

When you enable Equalizer APO to process the audio input from your Motu M-Series audio interface, the audio crackles or glitches.

Solution

  1. Launch Equalizer APO’s Configurator.exe. You can find it by searching “Configurator” in Start.
  2. Go to the “Capture devices” tab.
  3. Select “In 1-2“, the Motu input device.
  4. Enable “Allow silent buffer modification“.
  5. Close the Configurator and reboot.

Remarks

Equalizer APO is super useful for changing your microphone’s frequency response or applying VST effects to the audio input system-wide. This picture shows my setup for panning my single mic (left channel only) into dual mono, and then gating out background noise, and then volume equalization using a compressor.

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