Why Is One AirPod Louder Than the Other? (7 Causes + Fixes)
Why Is One AirPod Louder Than the Other?
7 causes, ranked by likelihood β and exactly how to fix each one.
If one AirPod sounds noticeably quieter than the other, you're not imagining it β and you're not alone. This is one of the most common AirPod complaints, and it has several possible causes ranging from a quick software fix to a hardware problem that needs a replacement part.
This guide walks you through every cause, starting with the most likely ones, so you can fix it fast without wasting time on steps that won't help.
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Quick Overview: All 7 Causes
| # | Cause | How Common | Fix Difficulty |
|---|---|---|---|
| 1 | Earwax / debris buildup | Very common | Easy |
| 2 | Audio balance setting skewed | Very common | Easy |
| 3 | Bluetooth connection glitch | Common | Easy |
| 4 | Uneven battery levels | Common | Easy |
| 5 | Moisture or water damage | Moderate | Medium |
| 6 | Outdated firmware | Less common | Easy |
| 7 | Hardware / speaker damage | Less common | Replace |
The 7 Causes (and How to Fix Each)
Earwax or Debris Buildup
This is the most likely culprit β especially if the volume difference came on gradually. Earwax accumulates on the speaker mesh and physically blocks sound output from one bud more than the other.
How to fix it: Use a dry, soft-bristled brush (a clean toothbrush works well) to gently brush the speaker mesh in a downward motion. Don't push debris further in. Never use water, cotton swabs, or compressed air directly into the mesh.
β Fix: Clean the speaker mesh
Audio Balance Setting Is Off
Your iPhone has an audio balance slider that controls how much volume goes to the left vs. right earbud. It can get accidentally moved β and when it's off-center, one AirPod will sound noticeably quieter even when both are working perfectly.
How to fix it:
Tap the Settings app from your home screen.
Scroll down to find Accessibility, then tap Audio/Visual.
Drag the slider until it reads 0.00 in the middle. Play audio to test.
Bluetooth Connection Glitch
Bluetooth connections can develop minor glitches over time, especially if you connect your AirPods to multiple devices. A corrupted connection can cause one AirPod to receive audio signal inconsistently, making it sound quieter.
How to fix it β try these in order:
- Restart your iPhone β hold the power button, slide to power off, turn back on
- Re-pair your AirPods β go to Settings β Bluetooth, tap the β next to your AirPods, tap "Forget This Device", then reconnect
- Reset your AirPods β place them in the case, hold the setup button on the back for 15 seconds until the light flashes amber then white, then reconnect
Uneven Battery Levels
When one AirPod has significantly less battery than the other, it can affect audio output β particularly on older units where battery health has degraded unevenly. The lower-battery bud may sound slightly quieter or distorted.
How to fix it: Place both AirPods in the case and charge to 100% simultaneously. After a full charge, test again. If one AirPod drains noticeably faster than the other consistently, the battery in that bud may be degraded.
β Fix: Full charge or replace battery
Moisture or Water Damage
Sweat, rain, or accidental splashes can get into the speaker mesh and temporarily muffle sound. Even AirPods Pro with their sweat resistance rating can be affected by heavier moisture exposure over time.
How to fix it: Let both AirPods air dry at room temperature for several hours β do not use a hairdryer or put them in rice. Leave the case open. If sound returns after drying, you're good. If it doesn't, the moisture may have caused internal damage.
β Fix: Air dry thoroughly
Outdated Firmware
Apple periodically releases AirPod firmware updates that fix audio processing bugs. If your AirPods haven't updated recently, a software bug could be causing the volume imbalance.
How to check your firmware version: Go to Settings β Bluetooth β tap β next to your AirPods β scroll to "About". The firmware version is listed there. AirPods update automatically when in the case, connected to iPhone, and near a power source β so the best fix is simply to leave them charging near your phone overnight.
β Fix: Leave in case near iPhone overnightHardware or Speaker Damage
If you've tried every fix above and one AirPod is still quieter, the speaker driver inside that earbud is likely damaged. This can happen from impact (dropping them), long-term moisture exposure, or simply age and wear. At this point, no software fix will resolve it.
The good news: you don't need to replace your entire set. At ReCellExchange, you can replace just the affected earbud with a 100% original part β for a fraction of what Apple charges for a full replacement.
β Fix: Replace the affected earbudSpeaker damage? Replace just the one that's broken.
Original AirPod replacement parts. Ships same-day. 1-year warranty.
AirPods Pro: One Extra Thing to Check
If you're using AirPods Pro specifically, there's an additional cause to rule out β ear tip fit. If the silicone ear tip on one side isn't creating a proper seal, you'll lose bass and overall volume from that side, making it sound quieter even if the speaker is fine.
Run the Ear Tip Fit Test: Go to Settings β Bluetooth β tap β next to your AirPods Pro β Ear Tip Fit Test. If it fails on one side, try a different size tip. This alone often solves the problem.
Calibrate Your AirPods With Your iPhone
If you've cleaned your AirPods and checked the balance setting but still notice a slight difference, try calibrating them. This syncs the audio output of both buds to your iPhone's audio profile.
Turn off Bluetooth temporarily so audio plays from your iPhone speakers.
Play audio and reduce iPhone speaker volume to zero.
Turn Bluetooth back on and let your AirPods reconnect automatically.
Gradually bring the volume back up. This forces the iPhone to re-sync audio distribution.
When Is It Time to Just Replace It?
If you've worked through every fix above and one AirPod is still quieter β or the volume difference keeps coming back β the speaker in that bud is done. At that point you have two options:
- Apple replacement: A single AirPod replacement through Apple costs $69β$89 depending on the model. They'll send you a refurbished unit.
- ReCellExchange replacement: Get a 100% original replacement earbud at a fraction of the cost, with same-day shipping and a 1-year warranty. You only replace the bud that's broken β not both.
Frequently Asked Questions
Why is my left AirPod quieter than my right?
Can you replace just one AirPod instead of buying a new pair?
Why does one AirPod keep going quiet and then coming back?
Does hearing loss in one ear make one AirPod seem quieter?
Is it normal for AirPods to have slightly different volumes?
Will cleaning my AirPods fix the volume imbalance?
Still not fixed? We've got the part.
If it's a hardware issue, replacing one AirPod is easier and cheaper than you think. 100% original parts, ships same-day, backed by a 1-year warranty.
Shop AirPod Replacement Parts