Runs 100% in your browser. Nothing is uploaded.
Speaker Test
Check left and right channels, bass and the full frequency range of your speakers or headphones.
20%
Options
Ramp volume in and out
Stop when tab is hidden
Choosing an output device works in Chromium browsers.
Start with low volume. The sweep includes very high and very low tones.
Channel test
Idle
Left
Right
Frequency sweep
— Hz
20 Hz to 20 kHz over 20s
Frequency
—Hz
Channel
—
Gain
20%
Sample rate
—kHz
More tests
What it measures
Channels
Separate left, right, and stereo tones so a dead driver or a swapped cable is obvious.
Range
A sweep from low bass through the top of hearing, drawn while it plays.
Safety
Playback starts quiet and asks before anything louder, so a laptop at full volume is not a surprise.
Fit
A short headphone check for balance between ears.
Questions
Will this be loud?
It starts at a low gain and waits for you to raise it. Use the system volume you already trust, then step up inside the test.
I only hear one side.
Run the left and right tones on their own. If one stays silent, the fault is in that channel, the cable, or the earcup, not the browser.