How to increase the volume of the speaker on Xiaomi Mi 9: safe and effective methods

Xiaomi Mi 9 is the flagship of 2019, which is still popular among users due to its balanced characteristics. However, many owners face the problem of not loud enough from the built-in speakers, especially when listening to music, watching videos or while calling. Unlike modern models with stereo speakers, the Mi 9 is equipped with a single bottom speaker, which limits the maximum volume.

In this article, we’ll look at 7 proven ways to increase volume on the Xiaomi Mi 9, from standard Android settings to hidden engineering menu features and third-party apps. It’s important to understand that some techniques can affect sound quality or speaker life, so we’ll point out the risks and limitations for each option. If you’re willing to improve your smartphone’s sound without buying external speakers, read on.

1. Sound settings in the standard Android menu

Before resorting to radical measures, check the basic sound parameters. MIUI (Xiaomi firmware) has several hidden options that can improve the volume without installing additional programs.

Open Settings → Sound and vibration and pay attention to the following points:

• 🔊 Multimedia volume - the slider should be at maximum, sometimes after system updates, it is reset.
• 🎵 Mi Sound equalizer -- turn it on and select the preset "Bas" or "Rock." It won't turn up the volume directly, but it will make the sound more intense.
• 📱 Adaptive sound: automatically adjusts the volume to the surrounding noise, turn it off if you want to manually control it.
• 🔇 Do not disturb – make sure the mode is turned off or configured correctly (e.g., does not block the sound of notifications).

It's also worth checking the settings of individual apps, for example, YouTube or Spotify may have its own volume control, which duplicates the system one, go to the player settings and make sure that there is no restriction.

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If the sound is quieter after the MIUI update, try resetting the sound to factory settings. Go to Settings → All settings → Reset and Reset → Reset the sound settings.

2. Engineering menu: hidden volume parameters

The Xiaomi Mi 9, like other Qualcomm Snapdragon 855 smartphones, has an engineering menu (Engineer Mode) where you can manually adjust audio settings, a method that requires caution, as improper changes can damage the speaker.

To get into the engineering menu:

1. Open the Phone app.
2. Enter the code ##36446337##
3. Select Hardware Testing → Audio → LoudSpeaker Mode.

Here you will see a few parameters:

• 🔊 Max Vol: Maximum volume (default: 160) can be increased to 180-200, but not higher!
• 🎛️ Type is a speaker type (usually Class D for Mi 9.
• 📊 Value is the current volume value, and you can test the sound at different levels.

After the changes, restart your smartphone. If the sound gets worse (there are distortions), return the Max Vol value to the original.

3. Apps to amplify sound: top-5 tested utilities

If standard methods do not give the desired result, you can use third-party applications. We have selected the 5 most reliable utilities that work on the Xiaomi Mi 9 with MIUI 12/13/14:

To install most apps, you just need to download them from Google Play, except for ViPER4Android, which requires root rights and manual driver installation. If you're not ready to get root, choose among the other options.

Backup current sound settings

Check the compatibility of the application with MIUI 12/13/14

Reviews of the stability of work

Make sure the application does not require root (if no licenses)

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4. Root access: maximum amplification of sound

If you're willing to take drastic measures, getting root rights will give you access to deep audio settings. On the Xiaomi Mi 9, you can do this with Magisk or TWRP.

• 🔧 Installation ViPER4Android fully functional.
• 📈 Editing system files mixer_paths.xml (volume limiters).
• 🎛️ Magisk modules, such as Audio Modification Library.

But there are also serious risks:

⚠️ Attention: Getting root voids Xiaomi’s warranty; improper editing of system files can lead to a device being “bricked” (completely inoperable); and some banking applications (e.g. Sberbank Online) are no longer running on rooted devices.

If you do, follow this instruction:

1. Unlock the bootloader through the official Xiaomi tool.
2. Install TWRP for Mi 9 (the version should match your firmware!).
3. Run Magisk through TWRP.
4. Install ViPER4Android and set up a sound profile.

On Xiaomi Mi 9 with MIUI 14 and later firmware, you may need to roll back to an older version to successfully get root.

5. Hardware solutions: external amplifiers and speakers

If software methods don't work well, consider hardware ways to improve sound, which are more reliable and don't affect the life of the built-in speaker.

Options for Xiaomi Mi 9:

• 🎧 Headphones with amplifiers - for example, Sony MDR-1AM2 or Audio-Technica ATH-M50x. It will give a better sound than the built-in speaker.
• 🔊 Portable Bluetooth speakers — JBL Charge 5 or Xiaomi Mi Portable Speaker connect to Bluetooth and sound many times louder.
• 📱 USB-C an amplifier, like AudioQuest's DragonFly Red, plugs in to the port. USB-C It improves sound for both headphones and external speakers.
• 🔌 3.5 mm adapter → USB-C — If you use wired headphones, an adapter (such as the original from Xiaomi) will allow you to bypass the limitations of the built-in DAC.

The budget option is a Bluetooth speaker. Modern models (for example, Xiaomi Mi Bluetooth Speaker 2) cost about 1,500-2,000 rubles and give a volume comparable to a small home acoustics, while they are portable and last up to 20 hours from the battery.

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Hardware solutions are the only way to significantly amplify sound without risk to a smartphone. Software methods always have limits on speaker power.

6. Frequent mistakes and how to avoid them

When you try to increase the volume on Xiaomi Mi 9 And users often make mistakes that reverse the effect -- the sound gets worse or disappears altogether.-5 errors and ways of solving them.

Error 1: Installation of unverified applications

Many Google Play utilities promise to "boost up 300%," but they're actually just applying a software filter that distorts the sound.

• 🚫 Asking for too much permission (e.g. access to the SMS or contact).
• 📉 After installation, the sound becomes hoarse or intermittent.
• 💰 Requires payment for the “full version” immediately after launch.

Error 2: Change the parameters in the engineering menu without testing

If you have enlarged the Max Vol in the engineering menu but have not checked the sound at different frequencies, the risk of damaging the speaker increases.Always test the changes at medium volume for 5-10 minutes before turning on the music at full.

Error 3: Using root without backup

⚠️ Note: Before getting root, be sure to make a full backup through TWRP Xiaomi Cloud, in case of a failed firmware of sound modules (for example, ViPER4Android) A smartphone may stop loading. Recovery without a backup will require flashing through a Fastboot, which is difficult for beginners.

Mistake 4: Ignoring MIUI Updates

Xiaomi regularly releases patches to fix bugs with sound. If you haven't updated your firmware in a long time, some settings (such as Mi Sound Enhancer) may not work correctly. Check the relevance of the version in Settings → About Phone → System Update.

Mistake 5: Neglecting the speaker cleaning

Over time, the Mi 9 speaker grille accumulates dust, which degrades the sound, clean it with a soft brush or compressed air (a canister for cleaning equipment), do not use needles or toothpicks, they can damage the membrane.

7. Alternative methods: unobvious tricks

If none of the above methods worked, try out custom solutions that are rarely mentioned in guides.

Method 1: Using the Developer Mode

Activate Developer Mode (7 times tap the MIUI version in your phone settings), then turn on the option to Turn off absolute volume in Settings → Additional → For developers. This will allow you to independently adjust the volume of media and notifications.

Method 2: Adjusting sound through ADB

If you have experience with ADB, you can manually change the volume limits. Connect your phone to your PC and follow the command:

adb shell settings put global volume_steps 30

This will increase the number of volume control steps from 15 to 30, allowing you to tune the sound more accurately.

Method 3: Replace the firmware with custom

Some custom firmware (like LineageOS or Pixel Experience) have improved audio drivers, but this method is only suitable for advanced users, as it requires unlocking the bootloader and installing via TWRP.

Method 4: Using a magnetic speaker

If the built-in speaker is damaged, you can connect an external magnetic speaker through a USB-C connector (using an adapter), such speakers (for example, Xiaomi Mi Bluetooth Neckband Speaker) are attached to clothes and give a loud sound without distortion.

FAQ: Answers to Frequent Questions