MSI KT4 Ultra User Manual page 93

Multi-Channel Audio Demo:
You can use the "Multi-Channel Audio Demo" application to test the
audio setting you are configuring/have configured.
The path will be showed as following:
Click on each audio output to test the sound effect and the sound
configuration. Please note this demo will vary depending on your setting to
the speakers.
Using 4- or 6-Channel Audio Function
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