Support → SoundSource

To avoid playback issues, SoundSource deactivates when other audio capture is detected

If you use multiple applications to capture audio on your Mac at the same time, you may hear undesired audio playback, including doubled audio. This issue is particularly likely to arise with SoundSource, as it’s generally left running at all times.

Our own products are built to work well together, so you shouldn’t have any issues using SoundSource alongside Airfoil, Audio Hijack, Loopback, or Piezo. However, other products can also capture audio on your Mac, and that may lead to audible playback issues.

To avoid this problem, SoundSource works to detect when other apps are capturing audio, and then deactivates its own audio processing. When SoundSource’s processing is disabled, it displays a warning triangle next to the system output (and any other applications using that same output):

When that ⚠️ is clicked, SoundSource will display a notice to explain what has occurred:

When you stop capturing audio with another application, SoundSource’s audio processing is restored automatically.