Audio Balance Test – Check Left/Right Speaker & Headphone Balance
Left / right level checkReady
- Start quiet, raise slowly
- Check L/R markings first
- Disable audio enhancements
- Runs inside your browser
- No upload, no account
- Nothing saved after you close
Left/right audio balance test
This audio balance test checks whether your left and right sides are equally loud. A centred sound should appear exactly in the middle; if it leans to one side, your balance setting, a hearing difference or a weak driver is to blame.
Pan steps
Five fixed positions plus a smooth sweep.
Speakers and headphones
Works on any stereo output.
Private
Runs entirely in your browser.
How to Use the
Balance Test
- 01
Centre
play the centre signal and note where it appears.
- 02
Steps
play full left, half left, half right and full right and check they are mirror images.
- 03
Sweep
run the left-to-right sweep; it should move smoothly with no jump.
- 04
Adjust
if the centre leans, correct the balance slider in your sound settings and retest.
Why balance matters
Stereo music, games and films place sounds by making one side slightly louder than the other. If your system already favours one side, every voice drifts off-centre and positional audio in games becomes unreliable. A 2–3 dB imbalance is enough to move a centred voice noticeably.
Where to fix balance on each system
- Windows 11/10: Settings → System → Sound → choose the output → Left and Right channel sliders (or Control Panel → Sound → Properties → Levels → Balance).
- macOS: System Settings → Sound → Output → Balance slider; also check Accessibility → Audio for mono audio.
- Android: Settings → Accessibility → Audio balance.
- iPhone/iPad: Settings → Accessibility → Audio & Visual → Balance.
- Linux: Settings → Sound → Balance, or pavucontrol for per-channel levels.
Related guides and fixes
Learn more in these guides: No sound on Windows, No sound on Mac, Headphones only one side, Speakers crackling, How to test speakers, How to test headphones.
Speaker or ear?
If the centre leans the same way on speakers and headphones, swap the headphones round (wear them backwards). If the lean follows the headphones, a driver is weaker. If it stays on the same ear, it could be your hearing, in which case try the hearing test per ear and consider a professional check.
Common causes of imbalance
- A balance slider moved by accident.
- Earwax or a blocked earbud mesh on one side.
- A damaged cable or loose 3.5 mm plug (wiggle it while playing).
- Room position: sitting closer to one speaker or a wall next to one side.
- Bluetooth earbuds with separate volume per bud.
Related checks
Use the stereo test to confirm the channels are not swapped, the polarity test for wiring, and our guide on headphones playing on one side only.
Frequently Asked Questions
Q.What should a balance test sound like?
The centre should appear directly in front of you or in the middle of your head; left and right steps should be mirror images.
Q.My centre leans left, what now?
Check the balance slider, then swap headphones round to see whether the fault follows the device.
Q.Is mono audio a problem?
Mono sends the same mix to both sides, so balance tests sound centred but stereo steps do not move. Turn it off for this test.
Q.Can I test balance on speakers?
Yes. Sit equally distant from both speakers.