Check how to make Realtek HD Audio Stereo Mix feature visible. If you don’t see Stereo Mix under Recording tab in Sound window, it might be hidden in your sound card. Read More Fix Realtek Stereo Mix Not Showing or Missing in Windows 10 You can use it as audio recording software to record all audio outputs from your computer. Realtek Stereo Mix is a sound tool that can record the output audio streams in your Windows 10 computer including speaker or microphone outputs, live streaming audio, broadcast radio, etc. It is also called “What You Hear” and mixes all the audio channels in your Windows 10 computer. Stereo Mix comes with most computer sound cards. How to Use Realtek Stereo Mix in Windows 10.Fix Realtek Stereo Mix Not Showing or Missing in Windows 10.How to Enable Realtek Stereo Mix in Windows 10.MiniTool Software not only provides various computer tips and tricks but also releases some free utilities like MiniTool Power Data Recovery, MiniTool Partition Wizard, MiniTool ShadowMaker, etc. Check how to show and enable Stereo Mix in Windows 10. This post helps you learn something about Realtek Stereo Mix.