how to use virtual audio cable to combine two headphones

Under Recording Tab, right-click on the CABLE Output and enable it, in case it not. Alternatively, you can open the Windows Sound settings from the Control Panel-> Hardware and Sound ->Sound. Go back to the Windows audio settings to disable the self listen loopback. To use two headsets on a PC without a splitter or audio mixer, you need to open your Control Panel and tweak a few settings. Go to Windows 10/8/7 search box and type sound.If you don't hear your voice, restart the Quest 2 again. If you head your own voice loopback, then you know the mike is working. Once you're back to your desktop, speak to test the mike. Restart your Oculus Quest 2 using the button on the side, and reconnect the link mode. If you do not hear your own voice, the mike is not working.Speak to check whether the mike is working. Go to this mike's properties and activate the self listen loopback checkbox to test whether the mike is working.

In the mike properties, Windows will display the Oculus Headset mike as if it had a constant 50% transmission, it's a bug, the monitor visual is meaningless.

Go to your windows sound settings (in the right part of the task bar, right click on the speaker logo and go to the sound settings : you'll want the old school control panel with multiple table for listening, recording, Windows sounds, etc.) verify that the Oculus virtual audio devices are set as both the default audio output and the default microphone.

How to use virtual audio cable to combine two headphones