Online Headphone & Earbud Audio Test

Test left and right stereo channels, volume balance, deep bass, and driver clarity on headphones, earbuds, AirPods, or gaming headsets directly in your browser.

Channel Tests

Wireless audio tip: If sound plays in both ears on single-channel tests, verify that OS Mono Audio is off and your headset is not set to hands-free call mode. See Bluetooth guide.

Channel Balance Check

Both tones play at exactly the same level. Compare how loud each side sounds — a clear difference suggests channel imbalance rather than a fully dead channel.

Phase / Polarity Test

Play the normal tone first, then the inverted one. With correct wiring the inverted version should sound noticeably thinner, quieter, or harder to locate, because the two channels partially cancel.

Frequency Sweep — 20 Hz to 20 kHz

Starts at a conservative volume. Listen for frequencies where the sound drops out, distorts, or rattles — those indicate response limitations.

Volume starts low and does not increase automatically.

Bass / Sub-bass Test — 40 Hz

If you hear nothing, your headphones may not reproduce sub-bass frequencies — this is normal for laptop speakers and small earbuds.

Rattle / Resonance Test

A 60 Hz tone drives low-frequency resonance. A rattle or buzz may indicate loose components or debris in the driver enclosure.

How to test headphones and earbuds in 3 steps

  1. Put on your headphones at moderate volume: Ensure the earcups or ear tips match your ears correctly (L on left ear, R on right ear).
  2. Play Left and Right channel cues: Confirm that the voice or tone is heard strictly in the corresponding ear. If reversed, turn the headset around or check cable wiring.
  3. Check center volume balance: Play the centered balance tone. The audio should sound like it is coming from right between your eyes. If tilted to one side, clean the earbud mesh or adjust OS balance.

Left and right headphone test

Put on the headphones at a moderate volume, then play each channel in turn. The spoken or tonal cue should come from the matching side. Use the focused left right headphone test if channels seem reversed. If one side is quieter, check the plug, Bluetooth connection, earbud fit, and system balance before assuming a driver has failed.

Interpreting your results

  • One side silent: Driver failure, cable damage near the 3.5mm jack, or a dead earbud battery.
  • Volume imbalance: Wax buildup on the speaker mesh (most common) or a shifted balance slider in OS settings.
  • Diffuse or hollow sound: Out-of-phase wiring or a bad 4-pole TRRS adapter shorting the mic line.
  • Frequency roll-off: Earbuds require a tight silicone seal in the ear canal to produce sub-bass below 40 Hz.

How to adjust headphone balance on iOS, Mac, and Windows

iPhone & iPad (iOS)

Go to Settings > Accessibility > Audio & Visual. Scroll down to the Balance slider and ensure it is centered at 0.00. Check that Mono Audio is turned off.

Windows 11 / 10

Open Settings > System > Sound. Select your headphones, click Device properties, and verify the L and R volume levels are identical.

Headphone Balance TestAirPods One Side Quiet FixAirPods Crackling FixFix Headphones One SideFix Reversed ChannelsComplete Audio Check

Quick answers

Frequently asked questions

How can I test my headphones?

Start at a low volume, play the left and right channel cues, and confirm that each sound comes from the matching ear. Then check balance, phase, and a comfortable frequency sweep. Listen for a quiet side, reversed channels, distortion, rattles, dropouts, or an unstable cable or Bluetooth connection.

How do I test headphone balance?

Use a centered mono voice or balance signal and check whether it sounds equally loud in both ears. Reseat the headphones or earbuds, check earbud fit, and verify the operating system’s left-right balance setting. If the imbalance remains, swap devices or cables to isolate the cause.

Can I test my headphones online?

Yes. Connect your headphones, select them as the system output, and run the online left-right, balance, phase, and frequency tests. A browser test needs no microphone permission or download. Keep the volume low before playing any tone, especially with in-ear headphones.

Is 20,000 Hz good for headphones?

A published upper limit of 20,000 Hz is common, but it does not prove that headphones sound good. Hearing sensitivity usually falls at very high frequencies, and results also depend on age, playback hardware, fit, distortion, channel matching, and how smoothly the headphones reproduce the audible range.