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I'm trying to get my computer to output audio in mono but despite selecting the option within the Ease of Access centre to enable mono audio, my audio is still coming out stereo.

The reason I need mono audio is because I need to hear all of some audio tracks I have. Parts of the audio are only available from the left channel and some only the right but my left earpiece no longer works.

In addition to enabling mono audio in the Ease of Access centre, what else do I need to do?

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Builds on the suggestions from , and . If Windows’ Ease of Access mono toggle was enabled but audio still comes out stereo, common causes are a dead driver- or hardware-level channel, a balance or enhancement setting that silences one channel, or an app/driver using exclusive output that bypasses the system mixer.

Practical checks and fixes:

  • Verify the headset itself by testing it on another device or trying a different set of headphones. If the left side is silent everywhere, the earpiece is faulty and a mono adapter or simple replacement is the fastest fix.
  • In Sound settings → Sound Control Panel → Playback → select the active device → Properties: check Levels → Balance (both L and R should be equal). In Advanced, try disabling “Allow applications to take exclusive control of this device” and turn off audio enhancements, then Restart the Windows Audio service.
  • If a third‑party audio manager (Realtek, ASIO apps, USB headset software) is present, try the generic Windows driver or disable the vendor enhancements temporarily — some of those bypass Windows’ mono mixing. Update or roll back the audio driver from Device Manager if behavior changed after an update.
  • For app-specific playback, use the app’s stereo/mono option (as noted for VLC). For a persistent system-wide software solution, tools such as Voicemeeter or a system-level audio processor can sum left and right into both channels (this is more advanced and requires configuration).

A cheap USB audio dongle or a passive mono summing adapter is a reliable hardware workaround when one earpiece is dead.

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Member Avatar for Reverend Jim

If you can play the audio stream in VLC there is a setting available from the menu

Audio
    Stereo Mode
        Mono
        Stereo
        Left
        Right
        Reverse Audio

Just select Mono

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