About

SoundTestKit is a free online sound test site. It offers tools for checking headphones, left and right channels, bass, simulated surround positions and individual tones. You can use the tests with headphones, earbuds or speakers, without installing an app or creating an account.

SoundTestKit is built by an independent developer.

Test tones and noise are generated locally in your browser. The tools do not record you or upload audio or your test answers. Playback starts only when you choose to play, and the default volume is low. Keep your device volume low too, then adjust it gradually.

The tests help you listen for channel direction, balance and low-frequency response. They cannot measure your equipment or identify a fault automatically. The surround page is a stereo simulation, not a check of a real surround system. SoundTestKit is not a medical or professional measurement tool.

For questions or feedback, email hello@soundtestkit.com.

Turn your volume down first

Set your device volume to about 25%. Bass tones and high frequencies can be louder than you expect. You can turn it up after the first sound.