Use the Speaker & Headphone Test
Free speaker and headphone test. Check the left and right channels, volume balance, phase (wiring) and buzzing on stereo speakers or headphones.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Left → sound only in the left ear/speaker ✓. Right → only right ✓. Phase test: first tone full, second thin → speakers are wired correctly.Open the Speaker & Headphone Test
Illustration. Open the tool for the real thing.
What is the Speaker & Headphone Test?
Find out in seconds whether both speakers or both headphone drivers work and are connected the right way round. Press Left, Right or Both and a test tone plays through only that channel, with plain-language feedback about what you should hear. A full test runs left, right and both in sequence.
Three extra checks find the faults a simple left/right test misses: a balance test alternates the channels at equal level so you can hear if one side is quieter, a phase test plays the speakers in phase and then with one inverted (a full sound followed by a thin, hollow one means correct wiring), and a rattle test plays steady mid-range tones at low volume to reveal a loose cone or buzzing cable. Volume starts low for safety and everything is generated in your browser. For custom frequencies, sweeps and binaural beats, use our Tone Generator.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Channel test with clear on-screen guidance.
Alternating channels at equal level.
Finds swapped speaker polarity.
Steady tones to reveal loose parts and bad cables.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This utility | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
How do I test my left and right speakers?
Press Left, then Right. Each should play only from its own side.
What does the phase test do?
It plays both speakers together, then one inverted. Correct wiring sounds full first and thin second; the opposite means one speaker has its + and − swapped.
What is the balance test for?
It alternates left and right at exactly the same level, so any difference in loudness points to a balance setting or a weak driver.
Why does one speaker sound quieter?
Check the balance control, cable connections and the speaker itself.
Where can I make custom tones?
Use our Tone Generator for frequencies, sweeps and binaural beats.
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Try the Speaker & Headphone Test now
Check left and right channels, balance and wiring on any speakers or headphones. Free to use.
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