01
Speaker Test
Plays test tones through the left, right and both channels so you can confirm every speaker is…
Headphone Test
Checks both headphone drivers with separate left and right tones, and confirms the stereo image is not reversed.
Audio Tests
Nothing uploaded
No sign-up
Free, unlimited
The test starts automatically — follow the prompts above.
In short
Headphone Test is a free online tool on inputtesthub.com that checks both headphone drivers with separate left and right tones, and confirms the stereo image is not reversed. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Headphone Test
- The test starts on its own — no button to press and nothing to install.
- Follow the prompt in the test panel and watch the readings update live.
- Press Reset to start over with a clean slate.
About the Headphone Test
The Headphone Test checks both headphone drivers with separate left and right tones, and confirms the stereo image is not reversed. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Checking new headphones before the return window closes.
- Diagnosing an earbud that has gone quiet.
- Confirming a wireless headset is in stereo rather than call mode.
Frequently asked questions
One side plays nothing.
Try the same test with headphones. If headphones are fine, the speaker or its cable is at fault. If the same side fails on headphones too, the problem is the output device or the balance setting in your operating system's sound panel.
The left and right labels are swapped.
Check the speaker cables first, then the balance control. On a laptop, a swapped stereo image usually means an audio driver problem rather than hardware.
My Bluetooth headset sounds thin and quiet.
It has probably switched to the hands-free profile, which is mono and low quality, because something has opened the microphone. Close video-call applications and reconnect — this test does not open the microphone, so it should stay in high-quality stereo mode.
Do I need an account to use the Headphone Test?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the page.
Is the Headphone Test safe to use with private information?
No. The Headphone Test runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
Who is the Headphone Test for?
In practice it gets used for three things: checking new headphones before the return window closes. Diagnosing an earbud that has gone quiet. Confirming a wireless headset is in stereo rather than call mode. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Does the Headphone Test need an app or a driver?
No installation, no extension and no driver. The Headphone Test uses the browser's own device APIs and begins as soon as the page loads, so there is nothing to press first. Press Reset at any point to start over with a clean slate.
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