Headphone Left-Right Test
Put your headphones on, then play the left, right and center tones to verify each channel. After that, try the 5-round channel check to prove your stereo routing is correct. Everything is generated live in your browser.
Manual channel tones
Channel check — 5 rounds
A tone plays on a random side. Click which side you heard, then continue. Your score appears at the end.
Round 1 of 5
Why channel checks matter
Swapped left and right channels make music, games and movies sound wrong — instruments and footsteps come from the wrong side. A quick tone test tells you in seconds whether your wiring, adapters or Bluetooth earbuds are routed correctly.
Related tools
You may also like our Audio Cutter and Audio Joiner.
Frequently Asked Questions (FAQ)
How does the 5-round channel check work?
The tool plays a short tone on a randomly chosen side, and you click Left or Right. After 5 rounds it shows your score, so a high score means your channels are routed correctly.
Do I need headphones for this test?
Yes, wear headphones or earphones for the most reliable result. Loudspeakers can blur the left and right channels through crosstalk.
What does the StereoPanner do in this tool?
The Web Audio API StereoPannerNode routes the test tone to only the left channel, only the right channel, or the center, so you can verify each channel separately.
Is it free to use?
Yes, it is completely free and works entirely in your browser. No account or download is needed.