Test your headphones directly in the browser — check left/right channels, bass, and frequency response.
Test your headphones instantly in the browser — no downloads or sign-ups needed. Our online tools help you verify stereo channels, bass response, and overall sound quality.
Go to the headphone test page and click on the Left or Right speaker buttons.
What to check:
Left button — sound should come only from your left ear
Right button — sound should come only from your right ear
If channels are swapped, your headphones may be on backwards
If you only hear one side, check cable connection or try other tests below
Pro tip
The "L" marking on headphones should be on your left ear. If the stereo test sounds reversed, flip your headphones around.
Use the music test to play sample tracks and evaluate sound quality.
Available test tracks:
Bass test — check low-frequency response and sub-bass extension
Classical — test soundstage, instrument separation, and dynamics
Vocal — evaluate midrange clarity and voice reproduction
Electronic — test transient response and detail in complex passages
Start at low volume and increase gradually. Some test tracks have strong bass that can be uncomfortable at high volume.
If one ear sounds louder than the other, use the balance slider on the test page to compensate.
Common causes of imbalance:
Partial hearing loss in one ear (very common)
Earwax buildup or ear infection
Damaged driver in one earcup
Software balance settings shifted
Test tip
Try the headphones on someone else. If they also hear imbalance, it's the headphones. If only you hear it, check your hearing or system settings.
The frequency generator plays pure tones from 20 Hz to 20 kHz — the full range of human hearing.
How to use:
Start at low volume (important for your hearing!)
Play 440 Hz (standard A note) — you should hear a clear, steady tone
Sweep down to 20 Hz to test bass extension
Sweep up to 20 kHz to test treble response
What to expect:
20-60 Hz — deep bass, you may feel vibration more than hear it
60-250 Hz — bass and low mids, should be clear and full
250-4000 Hz — midrange where voices and most instruments live
4000-20000 Hz — treble, adds sparkle and detail (upper limit varies by age)
The frequency generator offers four wave types:
Sine wave
Pure, smooth tone. Best for testing frequency response — reveals resonances and dropouts.
Softer than square, good for testing midrange clarity without harshness.
Sawtooth wave
Bright and buzzy, contains all harmonics. Good for testing high-frequency detail.
Safe testing practices:
Always start at low volume and increase gradually
Take breaks every 30-60 minutes during extended listening
Be extra careful with bass tests — low frequencies can be deceptively loud
If your ears ring after testing, you listened too loud
Hearing damage is cumulative and permanent
Exposure to loud sounds damages the tiny hair cells in your inner ear. This damage adds up over time and cannot be reversed. When in doubt, turn it down.
Problems found?
If your tests revealed issues with your headphones, check these guides: