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  1. Download:
  2. Run installer
  3. Restart computer
  4. Start DiracLiveProcessor in Applications
  5. In Dirac Live Processor, go to Options → Audio Settings
  6. In Output select the audio interface you want to use. Do not select "Dirac Virtual Audio Device"
  7. Open Audio MIDI Setup and make sure Dirac Virtual Audio Device is in the list of soundcards
  8. Play a sound and make sure the sound is passing through the Dirac Live Processor
  9. You are now ready to perform a measurement and create your first filters.
  10. Continue with Dirac Live® 3 - Quick Start Guide or Dirac Live® 3 - User Manual. Happy listening!


No Signal

Open Options→Audio Settings... dialog box and the signal should come back.

Make sure Dirac Virtual Audio Device is selected as the system Audio Output.

Dirac Virtual Audio Device does not appear in device select

  1. Open Finder
  2. Select Go → Go to Folder
  3. Paste /Library/Audio/Plug-Ins
    1. If you have a folder named "HAL", restart your device to make sure your installation is complete, and then check for the Dirac Virtual Audio Device again.
    2. If you do not have the "HAL" folder, create one and reinstall the Dirac Processor. Then check whether VAD.driver appears in the HAL folder.
  4. If the above does not work and you have a "HAL" folder, delete it, install Processor again, and then restart your device.

Processor is silent

  1. Activate Processor as described above, ensuring that Processor recognizes signal from your Mac (i.e. that the "No Signal" warning does not appear).
  2. If Processor is still silent, open Control Center → Sound or Audio MIDI Setup and select your desired output device as sound output.
  3. Using the volume keys or slider, turn the volume up for the output device. The volume level here  becomes the maximum level that Processor can utilize.
    1. For example, Realtek USB2.0 Audio is your desired output device. You select this as output in Control Center and turn the volume to 60%. When you activate Processor (by switching the system output to Dirac Virtual Audio Device), it can only output 60% volume at max. Pushing the Realtek output to 100% means that Processor can output 100% at max.
  4. Reactivate Processor by switching output back to Dirac Virtual Audio via Control Center → Sound or Audio MIDI Setup.
  5. Adjust volume as desired using the volume keys or slider.

Processor crashes when selecting Output

  • Match the sample rate for your chosen output device and the Dirac Virtual Audio Device in Audio MIDI Setup.

Processor crashes on start

  • Make sure to restart your Mac after installing Standalone for the first time.
  • Match the sample rate for your chosen output device and the Dirac Virtual Audio Device in Audio MIDI Setup.

  • Delete ~/Library/Application Support/Dirac/Dirac_Live_Processor/DiracLiveProcessor.settings and try opening Processor again.

Sound tearing


  • Sound tearing is usually caused by a notification sound breaking the Processor synchronization. You can avoid this by routing notification sounds away from the Dirac Virtual Audio Device.


  1. Open Audio Midi Settings
  2. Right click on any device aside from Dirac Virtual Audio Device and select "Play Alerts and Sound Effects Through This Device."

Dirac Virtual Audio Device disappears from Output Devices


Restarting macOS Core Audio will show the Virtual Audio Device in Device Select.

  1. Open Terminal
  2. Paste sudo launchctl kickstart -k system/
    1. If you're on a newer Mac and that command isn't recognized, try: sudo launchctl stop && sudo launchctl start
  3. Dirac Virtual Audio Device should appear in Device Select now
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