Xiaomi left earphone became quieter than right: causes and solutions

Why does Xiaomi’s left earphone sound quieter than the right?

Have you noticed that Xiaomi's left earphone is now quieter than the right? This is a common problem that owners face as wireless devices. TWS-Headphones (e.g. Redmi AirDots, Xiaomi Buds) and wired models can range from simple clogging of the speaker to hardware malfunctions. In this article, we will analyze all possible causes and give step-by-step instructions on how to return balanced sound.

It's important to understand that volume imbalances aren't always about breakdowns. Sometimes the problem is with smartphone settings, headphone firmware versions, or even the playback features of a particular audio file. Before you bring the device to the service center, try to diagnose and fix the malfunction yourself.

If you use Xiaomi Buds 4 Pro, Redmi Buds 5 or another model that supports Mi Earphones, some of the solutions will be available directly from the software. For wired headphones (for example, Xiaomi Hybrid Pro), the approaches will be different. Next, detailed analysis for each case.

1. Checking the sound balance in the smartphone settings

The first thing to do is make sure that the problem is not with your Xiaomi smartphone settings (or other device that has headphones connected to it). Android and iOS have a left-right-channel balance adjustment feature.

On MIUI (Xiaomi firmware), the path looks like this:

1. Open the Settings. → Sound and vibration.
2. Select headphone settings (or Additional sound settings in older versions).
3. Find the L/R balance and move the slider to the middle.

On the iPhone or iPad:

1. Go to Settings → Universal Access → Audiovisual content.
2. Activate the option Monoaudio Balance and set the slider to 0.

If after this manipulation, the sound leveled out, the problem was the software settings. If not, move on.

2. Cleaning speakers and headphone mesh

One of the most common reasons why the left earphone sounds quieter is because the earpiece or the protective mesh clogs up, and dust, earwax, or small debris can partially block the sound waves, creating a "muffled" effect, especially for the earbuds that fit tightly into the ear canal.

How to Clean Xiaomi Headphones:

• 🧼 Dry cleaning: use a soft toothbrush or cotton swab (not alcohol!). Carefully walk along the speaker grid, removing visible contaminants.
• 💧 Wet cleaning: moisten the cotton swab in distilled water or isopropyl alcohol (no more than 70%), then wipe the surface!
• 🔥 Pull: If the debris is deep inside, you can use a can of compressed air (as for cleaning the keyboard.
• ⚠️ Prohibited: Do not use needles, toothpicks or sharp objects - this will damage the speaker membrane.

For wireless headphones (such as Redmi Buds 5), check after cleaning to see if moisture has entered the charging connectors. If so, dry the device for at least 24 hours before use.

3. Resetting headphone settings to factory

If cleaning didn't work, try resetting your headphones. TWS-models (e.g. Xiaomi Buds 4 or Redmi AirDots 3 Pro) where connection settings or audio profiles may be confused.

Instructions for most Xiaomi/Redmi models:

1. Put both headphones in the charging case and close the lid.
2. Press and hold the button on the case (usually located on the side or bottom) for 10-15 seconds until the indicator flashes red and white.
3. Open the case cover - the headphones will automatically reboot.
4. Connect them again to your smartphone via Bluetooth.

For wired models (for example, Xiaomi Dual Driver) reset is not provided, but you can try:

• Turn off the headphones from the device.
• Connect to another smartphone/PC – if the problem persists, it’s the hardware.

Make sure your headphones are charged at least 30 times%|

Close the case cover (for TWS)|

Turn off headphones from all devices in Bluetooth | settings

Have the model instruction handy (in case of unique reset buttons)-->

4. Update to the headphone firmware

Manufacturers regularly release firmware updates for wireless headphones that fix sound bugs, improve connection stability and volume balance. If your Xiaomi Buds or Redmi AirDots are outdated, this can be the cause of the imbalance.

How to update firmware:

1. Install the official Mi Earphones app (for Android) or Xiaomi Wear (for iOS).
2. Connect the headphones to the smartphone via Bluetooth.
3. Open the app and go to the Firmware Update (or Firmware Update) section.
4. If a new version is available, follow the instructions on the screen. Don't turn off the headphones during the process!

For some models (such as Xiaomi Buds 3T Pro), the update is automatically when you connect to the Internet. If there is no firmware in the application, your model does not support OTA updates.

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Before you update your firmware, fully charge your headphones and case. If the process is interrupted due to discharge, the headphones may fail.

5. Checking for hardware malfunctions

If the software methods didn't work, the problem could be the hardware of the headphones.

To diagnose hardware problems:

• 🔊 Connect your headphones to another device (PC, tablet), and if the problem persists, it's the headphones.
• 🎧 Change the left and right headphones (if the model supports mono-connection). If the quiet channel is left, the problem is in the smartphone.
• 🔧 Disassemble the headphones (only if you have experience!) Check the integrity of the wires and contacts.

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If the headphones are warranty, don't disassemble them yourself! this will void Xiaomi's warranty obligations.

6. Alternative solutions to the problem

If the standard methods didn’t work, try these non-obvious solutions:

• 📱 Use a uniform equalizer: in applications like Poweramp or ViPER4Android Turn off all effects and install flat ACH.
• 🔄 Reconnect the headphones: remove them from the list of Bluetooth devices, then perform a new sync.
• 🎵 Check the source of the sound: some audio files have an uneven distribution of channels (for example, cover versions of songs).
• 🔋 Discharge the headphones to zero: sometimes firmware failures are eliminated after full discharge and subsequent charging.

Important: If the left-hand Xiaomi earphone is quieter after falling or getting moisture, immediately turn it off and dry it in rice or silica gel for at least 48 hours.

7. When to contact the service center?

If you've tried all of these, but the left earpiece is still quieter than the right, it's time to see a specialist. Here are signs that self-repair won't help:

⚠️ Attention: if the headphones make extraneous noises (crackling, squeaking) or completely stop playing low frequencies, this indicates damage to the speaker.

Official Xiaomi service centers in Russia and CIS:

• 🏢 Authorized Partners: List on the Website mi.com/ru/service/center.
• 📦 Warranty repair: valid 12 months from the date of purchase (if there is a check).
• 💰 Cost of repair: replacement speaker - from 1500 ₽, replacement of Bluetooth module - from 2500 ₽.

Before the service visit:

1. Make a backup of the settings (if the headphones are synced with the app).
2. Bring a check and a box (for a guarantee).
3. Describe the problem in as much detail as possible (when it appeared, after what actions).

FAQ: Frequent questions about the sound imbalance in Xiaomi headphones