Turn the volume down
Lower your device volume first, then raise it slowly. The page’s own volume never goes above its safety limit.
Speaker & Headphone Test
Check that your left and right speakers are the right way round, hear a smooth stereo sweep, and sweep from 20 Hz to 20 kHz to find your speakers’ range. Use the tone generator, bass sweep, polarity check, balance check and loudness ramp. Every sound has a built-in volume limit.
Open Speaker Test →How to test your speakers or headphones
Check left and right
Play Left, then Right. The low beep should come from the left, the high beep from the right. Then play the stereo sweep.
Sweep and fine-tune
Run the frequency and bass sweeps, mark where sound starts and fades, and use the polarity and balance checks for a proper stereo setup.
Manlin services
Make space for what matters
Use Manlin to reflect, plan and take your next step.
Speaker test FAQ
How do I test left and right speakers?
Press Left: a lower beep plays only in the left channel. Press Right: a higher beep plays only in the right. The speaker icon on the matching side lights up. If you hear them from the wrong sides, the channels are swapped.
Is this test safe for my ears and speakers?
Every sound passes through one volume stage and a hard limiter that keep it at or below −6 dB of digital full scale, and the default volume is −18 dB. Your device’s own volume still applies, so start low, especially with headphones, and stop a test at any time.
What can I learn from a frequency sweep?
The sweep glides from 20 Hz to 20 kHz on a logarithmic scale, so each octave takes the same time. Press Mark when the tone becomes audible and when it disappears to see the range of your speakers and your hearing. Buzzing at some pitches points to a loose part or a damaged driver.
What does the polarity (phase) test do?
It plays the same sound on both sides and flips the right side’s polarity every 2 seconds. Correctly wired speakers sound fuller and centred when the label says “In phase”. If it’s the other way round, swap + and − on one speaker.
What is pink noise for?
Pink noise has equal energy in every octave, so it sounds even across the range. It’s used to compare speakers, set levels and check balance.
Can I choose which speakers or headphones to test?
In browsers that support choosing an audio output, the Output device list lets you send the test to any connected device. Device names appear once the site has been allowed to use a microphone. Elsewhere, change the output in your system sound settings.
Are the sounds downloaded from somewhere?
No. Every tone, sweep and noise is generated in your browser as it plays; nothing is downloaded or uploaded.
More tools in this category
Keyboard TestFree online keyboard tester: see every key light up, find dead, stuck or double-pressing keys, check ghosting and rollover, and measure key repeat. ANSI, ISO, JIS, Mac.
Mic TestFree online microphone test: live level in dB, waveform and spectrum, noise floor, clipping warning, and record a clip to hear yourself. Nothing is uploaded.
Webcam TestFree online webcam test: live preview, real resolution and frame rate, supported sizes up to 4K, light and colour readings, snapshot and short clip. Nothing is uploaded.
Mouse TestFree online mouse tester: check every button and the scroll wheel, catch unwanted double clicks, run a click speed (CPS) test and estimate your polling rate.
Screen TestFree online screen test: full-screen colours for dead and stuck pixels and backlight bleed, plus gradients, gamma, black level, sharpness, motion blur and a stuck pixel fixer.