If you want to record or mute the microphone sound with a specific hotkey, please select the microphone as the Secondary Sound Device and check the 'Push-To-Talk or Push-To-Mute’ option.
Please choose one of the two options.
You can control the recording sound by right-clicking on the speaker icon in the taskbar.
-> Open Volume mixer -> please change the volume for individual apps by dragging the volume slider up or down.
(Results may differ depending on the recording target and computer.)
Is the recorded sound too low even though you haven't adjusted the volume? Please check the Windows sound settings to fix the problem.
1) Please check the Windows sound settings.
To record computer sound in Windows 7, 8 or 10, choose "(Default Sound Device)" as the primary sound device in Bandicam and set "Speakers" as the default Playback device in Windows. » See more
2) When Skype or Voice chat lower the recording volume,
Bandicam Video Tab -> Settings -> Sound Settings (Windows Sound Settings) -> In the [Communications] tab, please try selecting "Do nothing".