If you are running Windows 11 Insider Build 25281 then you can enable new volume mixer.
Here are the steps:
- Open GitHub website.
- Download ViVeTool v0.3.2
- Extract the zip folder.
- Open Command Prompt as Admin and copy-paste:
cd c:\folder\path\ViveTool-v0.3.2 hit the Enter key.
- Now copy-paste the following command:
Vivetool /enable /id:42106010 - This will enable new volume mixer.
- Reboot.