It’s found at controls > Sound > More Sound controls > Recording.
Typically, Windows 11 plays audio through one gadget at a time—whether that beUSB speakersorwireless headphones.
What if you want to hearsound from multiple devicesat the same time?
With a little tinkering, it can be done.
It did not work with HDMI or Bluetooth devices.
Scroll down and select “More Sound tweaks.”
This will open a pop-up window.
Look for “Stereo Mix” in the list of recording devices.
If you don’t see it, your PC doesn’t support this feature.
Right-click it and select “Set as Default gadget.”
Click “Apply” to finish.
If everything worked, you should immediately hear audio from both devices.
If not, it’s likely your PC or the connected devices are not compatible with this feature.