Why is one side of my headphones silent?

Check the simple causes first: the plug fully in, the earbud charged and connected, and the balance setting centered. Then try the pair on another device. If the same earpiece stays silent there too, the fault is likely in the headphones or their cable.

Why is one side quieter than the other?

A blocked ear tip or mesh and a poor fit on one side are common causes, and a balance setting on your device can do it too. Clean and refit that side, check the setting, then compare the two sides with pink noise.

Why does the bass sound thin?

With earbuds and many closed headphones, the seal matters most. Press them in gently while the sweep plays: if the bass grows, try another tip size or adjust the fit. Some headphones simply have little output at the lowest notes, and this test cannot tell you the exact figure.

How do I know if my headphones are on the wrong way round?

Press Left. If the chime lands in your right ear, take them off, look for the L and R marks and put them on again. If the marks are right and the sides are still reversed, try another device, because the sound may be swapped before it gets to the headphones.

Can this tell me whether my headphones are good or measure their frequency response?

No. It can reveal a silent side, a clear imbalance, a rattle or a poor seal. It cannot measure frequency response or distortion, and it says nothing about your hearing. For figures, look for published measurements of your model.

Headphone Test

Put your headphones on and check three things: that each side plays in the correct ear, how the bass holds up from 20 to 200 Hz, and whether a sound travels smoothly from ear to ear. It is a check by ear, not a measurement of your headphones or your hearing.

Turn your device volume down before the first press, then raise it slowly. Keep it at a comfortable level.

Test volume: 25%

Left, right, both

Press a side to hear a short chime there. While another test plays below, these buttons move that test to the side you pick.

Frequency sweep

One tone gliding from low to high. Watch the number and note where the sound fades in or drops out.

Do not turn up the volume to reach the lowest tones. A tone around 1,000 to 5,000 Hz at the same setting will sound far louder.

Moving sound

Noise travels from the left, across the middle, to the right and back. It should move smoothly, with no jump or hole in the center.

Bass tones

A steady low tone until you stop it. Compare the two sides at the same note, and try pressing the ear cups or earbuds in gently.

Pink noise

A steady rush of sound across the whole range. Useful for hearing whether two sides sound alike.

Nothing is playing.

All sounds are made in your browser. This page uses no microphone and records nothing.

How to test your headphones

Three short checks, about a minute in all. Start with the volume low, since headphones sit right at your ears.

1
Wear them by the marks, press Left and Right
Find the small L and R on the band, the stems or the cups and put them on that way. The chime should land only in the ear you pressed.
2
Run the bass sweep
A tone climbs from 20 to 200 Hz in 15 seconds with the number on screen. Listen for the point where it appears, then gently press the cups or earbuds in: if the bass grows, the seal is the issue.
3
Follow the moving sound
Close your eyes and press the moving test. Noise should slide from your left ear, through the middle of your head, to the right and back, with no jump.

For speakers and the full range, use the Sound Test. To check balance and channel order on their own, use the Left Right Audio Test. To hold any bass note, use the Tone Generator.

What you heard, and what to try

Likely causes, not a diagnosis. A test by ear can point you in a direction but cannot prove a fault.

What you heard	Common causes	Try this
A channel is silent	Plug not fully in, a damaged cable, an earbud not connected or not charged, balance set all the way over	Reseat or charge it, check the balance setting, try another device. If the same earpiece stays silent, the headphones are the likely cause
One side is quieter	Blocked mesh or ear tip, a poor seal on that side, a balance setting	Clean the tip or mesh, refit that side, then compare with the pink noise
Bass is thin	A poor seal, especially on earbuds, or an equalizer setting	Try another tip size, push gently while the sweep plays, turn off equalizers
Left and right are the wrong way round	Worn backwards, or earbuds in the wrong ears	Check the L and R marks, then press Left again
The moving sound jumps or vanishes in the middle	Spatial audio or virtual surround, or a mono setting	Turn those effects off for the test, then run it again
Rattle or buzz during the sweep	Too loud, or a damaged driver	Lower the volume. If it stays at a low level on one side only, that side may be damaged

Why the bass sweep sounds the way it does

The start of the sweep is meant to be hard to hear. Below about 100 Hz, ears need much more level for a tone to seem equally loud, so a sound that appears gradually around 30 to 60 Hz is normal and does not mean the headphones are weak. Compare the left and right sides at the same note instead of chasing a number.

Fit changes the result more than most people expect. A patent on checking earbud seals says a poor seal can reduce bass significantly and upset the balance between left and right. This is why pressing gently during the sweep is a useful check, and why trying another ear tip size is worth doing before you decide a pair is faulty.

This test does not measure your headphones. The rated range on the box, such as 20 Hz to 20 kHz, says nothing that this page can confirm, because measuring a frequency response takes a calibrated rig. It also does not test your hearing. Do not turn the volume up to hear the lowest tones, since the higher tones in the sweep will be much louder at the same setting.

When a headphone check is useful

A new pair, while you can still return it
Run all three checks at home on the first day, since a dead or weak side is easier to return early.
A wired cable that crackles
Play pink noise and gently move the cable near the plug and the cups. Crackle or dropouts that follow your hand point to the cable.
Changing ear tips
Hold one bass tone, such as 60 Hz, and swap tips. The size that keeps the note strongest in both ears is usually the better seal.
Before you listen back to a recording
A quick left and right check rules out your headphones when a recording seems to have one side missing.

Listening back to what you recorded

Headphones that play both sides cleanly help when you listen back to a meeting or interview. ParrotNotes records those conversations, transcribes them and summarizes them, so you can read them as well.

Get Started Free

Related tools

Headphone test questions

Sources