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Headphone Test

Five checks, five minutes: channels, polarity, bass reach, treble reach, and distortion. Put your headphones on, set a moderate volume, and work down the list - new pairs, used pairs, and "something sounds off" pairs all take the same test.

1 · Left / Right channels

Each side should play alone, at equal volume. A missing or weak side points at the cable, a blocked grille, or OS balance settings.

The centered tone should image exactly in the middle of your head - off to one side means unequal drivers or balance.

2 · Wiring polarity (phase)

Compare the two buttons. In-phase should sound fuller, bassier, and locked to the center; if inverted sounds better, one side is wired backwards.

Out-of-phase headphones cancel bass and image diffusely - most common after a cable repair or replacement.

3 · Bass reach

A 15-second sweep from 100 Hz down to 20 Hz. Note where the tone becomes inaudible - good over-ears and sealed in-ears reach 20-30 Hz.

Weak bass on in-ears is usually a broken seal, not the driver - reseat with larger tips and sweep again.

4 · Treble reach

A 15-second sweep from 8 kHz up to 20 kHz. The point where it vanishes is usually your hearing ceiling, not the headphones.

Compare against your hearing age result before blaming the hardware.

5 · Bass distortion

Steady low tones at a healthy level. A clean sine should sound perfectly smooth - buzzing or crackling means debris or a damaged driver.

A hair on the driver buzzes exactly like a torn one - clean the grille before writing off the pair.

Beyond the five checks

Wireless pair? Measure its delay with the latency test - codecs range from 40 to 300 ms and decide whether video and games stay in sync. Treble sweep vanished early? That sweep ultimately measures you, not the hardware - bookmark your ceiling with the hearing age test and re-check it yearly. Speaker instead of headphones? The quick sound test and the speaker cleaner cover the loudspeaker side.

The companion tools: Latency Test · Hearing Age Test · Headphone Guide · Sound Test · Fix My Speaker

Headphone Test FAQ

How do I test if my headphones are working properly?

Five checks: left and right play separately at equal volume; a centered tone images in the middle of your head; the in-phase signal sounds fuller than the inverted one (polarity); slow bass and treble sweeps play smoothly to the extremes without dropouts; and bass tones at moderate volume sound clean, without buzzing or crackling. This page runs all five - a pass on each means the pair is functionally healthy.

Why is one side of my headphones quieter?

In rough order of likelihood: a blocked earwax filter or grille on that side, a damaged cable near the plug or earcup (wiggle it while the tone plays - crackling confirms it), OS balance settings shifted off-center, or a failing driver. A steady test tone makes the left/right comparison far more reliable than music.

What does the phase test tell me?

Correctly wired headphones play both drivers in the same polarity: the in-phase button should sound solid, bass-rich, and centered in your head. If the inverted button sounds fuller or more natural instead, the wiring is reversed on one side - typically a miswired replacement cable or repair. Out-of-phase headphones lose bass and image diffusely.

How low should my headphones play?

Good over-ears and sealed in-ears produce audible output down to 20-30 Hz; open-backs and budget earbuds often start at 40-80 Hz. With in-ears, weak bass is 90% fit: a broken seal dumps everything below 100 Hz - try larger tips and reseat before blaming the drivers. The treble ceiling you find is usually your ears, not the hardware; compare with your hearing age result.

What causes buzzing or rattling on bass notes?

On bass tones a torn or rubbing driver buzzes clearly - but so does a hair or debris caught in the driver, which is common and fixable (clean the grille gently). Test at moderate volume: a clean sine should sound perfectly smooth. Buzzing that persists after cleaning on both 40 and 60 Hz usually means driver damage.

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