How to Enable Mono Audio in Windows 10
Mono audio is an accessibility feature of Windows 10 that makes sure that even if a listener has an issue with one ear or one audio channel, he will never miss a word or sound of audio playing in a stereo headset or multi-channel speakers. Usually, audio streams include at least left and right channels. So, the listener receives a different audio stream from both channels with different sounds. Unlike stereo, mono audio plays the same stream via both channels.