How to increase the volume of headphones on Xiaomi smartphones with MIUI 12: safe and hidden methods

You turned on your favorite track at full volume, but the sound in your headphones is still too quiet? The problem is familiar to many owners of Xiaomi smartphones based on MIUI 12 — even at the maximum volume level in the settings, the sound may not be powerful enough, the reasons are rooted in the limitations of the manufacturer, protection from damage to the speakers and the features of audio processing in the firmware.

In this article, we will look at 7 proven ways to increase headphone volume, from standard settings to hidden engineering menu features and third-party utilities. Importantly, not all methods are equally safe. Some can damage headphone speakers or worsen sound quality, so we will explain the risks in detail and give recommendations for minimizing them.

Why Xiaomi Headphones Play Quiet: The Main Reasons

Before you start setting up, you should understand why the volume is limited.

• 🔊 Hardware limitations: Many Xiaomi models (especially the budget Redmi series) use weak audio amplifiers that cannot physically deliver high power.
• 🛡️ Protection against damage: MIUI 12 software limits volume to prevent overloading of headphone speakers (especially relevant for cheap models).
• 🎧 Impedance incompatibility: High impedance headphones require more power than Xiaomi smartphones can give.
• 🔧 Equalizer settings: An incorrectly tuned equalizer can eat up some of the volume, especially if the low or high frequencies are amplified.

If you use Bluetooth headphones, the problem may lie in the protocol version (such as AAC or SBC) or in the limitations of the device itself. For example, Xiaomi Mi True Wireless Earphones 2 have their own volume limits that are independent of the smartphone.

⚠️ Warning: Before changing your settings, check if your device is running Safe Sound (in some regions it activates automatically) and this mode artificially lowers the volume to protect your hearing.

Method 1: Standard volume settings in MIUI 12

Start with the basic settings, and maybe the problem can be solved without tampering with the system files.

1. Open the Settings. → Sound and vibration.
2. Check out the multimedia volume slider – it should be at its maximum.
3. Slip the gear icon next to the slider and make sure that the option Separate volume control is turned off (otherwise the volume of the headphones can be reset).
4. In the same menu, find the sound quality and select High (if available).

If you're in your version MIUI 12 has a section Sound effects, try to disable all processing (e.g, 3D-sound or bass amplifier - they can lower the overall volume. Also check if Do Not Disturb or Quiet mode is activated in the notification curtain.

Turn off "Separate volume control" |

Set "Sound Quality" on "High" |

Disable all effects in the "Sound Effects" section |

Check the notification curtain for the presence of the "Do Not Disturb" mode"-->

Method 2: Use of the Engineering Menu (MTK/Qualcomm)

If the standard settings didn't work, you can go to the engineering menu, the hidden section where advanced audio options are available. Careful: incorrect changes can cause audio malfunctions!

Instructions for Qualcomm processors (most flagships Xiaomi):

1. Open the Phone app and enter the combination: ##36446337###
2. Select Hardware Testing → Audio → LoudSpeaker Mode.
3. Find the Max Vol or Volume settings and increase the values by 5-10 units (no more!).
4. Save the settings and restart the device.

For MediaTek processors (many Redmi models):

1. Enter on the phone: ##4636##
2. Go to Audio. → Headset Mode.
3. Increase the Headset Gain or Volume Steps (up to 20%).

⚠️ Attention: Increased volume through the engineering menu can cause sound distortion or damage to the earphone speakers!

Method 3: Applications for sound amplification

If you don't want to go through the settings, you can use third-party apps, which work like software amplifiers, but they have limitations.

• 🎵 Volume Booster GOODEV — simple booster with pre-presets for different types of headphones.
• 🔊 Equalizer FX — allows you not only to increase the volume, but also to adjust the equalizer for your headphones.
• 🎧 ViPER4Android — Powerful audio processor with support FX-effects (requires Magisk to work properly).

Example of setting up ViPER4Android:

1. Install the application and driver from the official repository.
2. Enable the Enable ViPER4Android option.
3. Go to Master Limiter and increase Gain by 3-5 dB.
4. In the Convolver section, turn off all effects – they can turn down the volume.

Important: many boosters simply increase signal amplification, which leads to distortion. For quality headphones (for example, Xiaomi Hybrid Pro HD), it is better to use an equalizer rather than a rough amplification.

Volume Booster GOODEV|

Equalizer FX|

ViPER4Android|

Nothing, enough standard settings |

Other-->

Method 4: Change the file mixer_paths.xml (advanced)

This method requires root rights and is designed for power users, and allows you to manually edit system volume limits, but if you do the wrong thing, it can lead to loss of sound or a bootloop.

Instructions:

1. With Root Explorer or Solid Explorer, go to the: /system/vendor/etc/mixer_paths.xml (or mixer_paths_tasha.xml for some).
2. Make a backup of the file!
3. Find the following lines: <path name="headphones"> <ctl name="RX1 Digital Volume" value="84" /> <ctl name="RX2 Digital Volume" value="84" /> Increase the value by 5-10 units (maximum to 94!).
4. Save the file, set the rights to 644 (rw-r--r---) and restart the device.

For different Xiaomi models, the paths and parameters may differ. 9 Pro needs to be edited. mixer_paths_skywalker.xml, and Mi 10 — mixer_paths_umi.xml.

⚠️ Attention: Incorrect editing mixer_paths.xml If the audio is lost after the changes, restore the original file from the backup!

💡

Before editing system files, check your device model with getprop ro.product.model in ADB. It will help you find the right one. mixer_paths for your firmware.

Method 5: Set up the equalizer for maximum volume

Sometimes the problem is not the volume level, but the wrong frequency balance. For example, if there's too much bass in a track, they eat up the power, and the overall volume seems lower, the solution is to adjust the equalizer.

How to optimize the sound:

1. Open Settings → Sound and Vibration → Equalizer (if not, install Equalizer FX or Poweramp Equalizer).
2. Choose preset Rock or Pop – they usually have more balanced frequencies.
3. Manually reduce sliders by 60-100 Hz (bass) and 12-16 kHz (high frequencies) by 2-3 dB – this will free up power for the medium frequencies that are responsible for the perceived volume.
4. Turn off all effects like Bass Boost or Virtualization.

If you use Bluetooth headphones, try changing the audio codec in the MIUI 12 settings:

• Go to Settings → Connected devices → Settings gear next to the headphones.
• Choose AAC or aptX (if supported) over SBC – these codecs are better at transmitting dynamic range.

Method 6: Update firmware and reset settings

Sometimes the quiet sound problem is caused by firmware bugs, like the early MIUI 12 for the Redmi Note 8 Pro, where there was a bug that caused the headphone volume to drop after the reboot, and the solution is to update the system:

1. Go to Settings → About the phone → System update.
2. Check for updates and install them (preferably via Wi-Fi).
3. If there are no updates, try resetting the sound settings: Settings → System → Resetting → Resetting the sound settings

If the problem has occurred after the update, you may want to roll back to the previous version of MIUI.

• Download the necessary firmware from the official Xiaomi website (Fastboot or Recovery section).
• Use the Mi Flash Tool for firmware (instructions are available on the 4PDA forum).

⚠️ Attention: Firmware rollback may result in data loss or bootloader lock.Before the procedure, make a backup through Settings → Additionally. → Backup and reset.

Method 7: Hardware solutions (if nothing worked)

If the software methods did not give a result, the problem may be in the hardware:

• 🔌 Use an external amplifier: Even inexpensive USB-C DAC (for example, Xiaomi USB-C to 3.5mm) It can significantly improve sound.
• 🎧 Check the headphones: Connect them to another device. If the sound is quiet everywhere, the problem is with the headphones, not the smartphone.
• 🔧 Clean the 3.5mm connector: Dust or oxidation of the contacts can degrade the signal. Carefully clean the connector with a toothpick (not metal objects!).
• 🔋 Check the battery: At low charge (less than 15%) MIUI 12 can automatically lower volume to save energy.

If you use Bluetooth headphones, try:

• Reset their settings (press the power button for 10 seconds).
• Connect to another device and check the volume.
• Update the firmware of the headphones (if available through the Mi Home or Airoha app).

💡

If all software methods did not help, most likely, the problem is in the hardware: a weak smartphone audio amplifier, faulty headphones or a damaged connector.

FAQ: Frequent questions about headphone volume on Xiaomi