MSI KT6 Delta-FIS2R User Manual page 94

Microphone
Click on the Microphone tab and the following screen appears.
! Mute Microphone: Check this item to disable microphone inputs.
! Microphone Selection: You may select the microphone input you are going
to use. But if your system does not support 2 microphone inputs, then you
won't see two items.
The real-panel microphone jack is sometimes shared by center/subwoofer
output and will be grayed as below: when you set 6CH speaker output. At
this moment, you can still use front-panel microphone.
! Microphone Boost: Check this them to enhance microphone volume by
+20dB.
Using 2-, 4- or 6-Channel Audio Function
A-11