There are 2 forms of audio input that you can use on OBS: audio input sources and audio output sources. It may seem confusing at first because everything is technically an input source with OBS ...

We show you how to fix the issue where OBS is not capturing Game Audio on Windows 11/10. You need to change these settings to fix the issue.

This completes the installation of the NVIDIA Audio Effects SDK, click Close. Next, set up OBS Studio. Click the gear icon on your audio input device, such as a microphone, and select Filter.