Virtual audio devices

For security reasons, AudioRelay can’t listen to the audio of your device on macOS. Apps can only capture what comes from a microphone. You need to install a virtual audio device that can route the audio output to a fake microphone.

Here are some virtual audio devices available for macOS:

• BlackHole (Free, open source, advertised as 0 latency)
  • They provide a 2ch and 16ch version
  • Install both if you'd like to send audio in both directions
• VB-Cable (Free, donations welcome)
  • Works OK but has relatively high latency by default
    • You can open its option panel to reduce latency
• GroundControl (Free)
• Loopback ($100+, can route audio between apps)