Free hardware tester
Sound Test: Check Speakers and Left Right Audio
Runs locally in your browser. Nothing is uploaded.
Sound and speaker test
Check left, right, and both channels, then try a controlled tone or short frequency sweep.
This is a functional channel and frequency check, not a hearing test or calibrated speaker measurement.
Last updated: July 29, 2026
Sound test: This sound and speaker test generates local Web Audio tones for left, right, and both channels, plus an adjustable frequency and short sweep.
How this sound test works
Set system volume low. Play left, right, and both channels. Move the frequency control for a steady tone or run the three-second sweep. Stop immediately if a tone is uncomfortable.
How to read the results
The left and right controls should come from the expected side. A sweep should move smoothly without obvious rattles or dropouts, but room acoustics and human hearing make this a functional check rather than a frequency-response measurement.
Common causes of failed tests
Wrong channels or missing sound can involve cable routing, balance settings, Bluetooth profiles, mono audio, loose connectors, muted apps, damaged drivers, amplifier protection, or frequencies the speaker cannot reproduce.
Troubleshooting before you replace hardware
Lower volume, confirm the output device and balance, disable mono audio if stereo is intended, reconnect cables, compare headphones, and test another app. Do not use high volume to force a missing frequency.
For setup and buying context, see the mic test, webcam test, CPS test, and sound test.
Frequently asked questions
Can this test left and right speakers?
Yes. Separate controls pan a tone to the left, both channels, or the right.
Is the frequency sweep a hearing test?
No. It is a functional audio-output check and is not calibrated or medical.
Why can I not hear low bass?
The speaker, headphones, room, volume, connection, or your hearing may limit low-frequency output.