How to make stereo sound on Xiaomi Redmi Note 8 Pro: the full guide

Xiaomi Redmi Note 8 Pro is one of the most popular mid-range smartphones, but many users are faced with the question: why is the sound coming from only one speaker?In fact, the model is equipped with two speakers, but to get real stereo sound requires the right setup or even a little software intervention.

In this article, we will look at all the available ways to activate stereo sound, from standard MIUI settings to the use of engineering menus and third-party applications. You will learn how to check the performance of speakers, what parameters affect the sound quality, and what to do if one of the speakers does not work. We will also look at common myths (for example, about “hidden stereo” in firmware) and give practical recommendations for improving the sound without risking damage to the device.

It's important to understand that the Redmi Note 8 Pro has two speakers physically, but by default the second one is only used for conversations (like a "talk" speaker). To use it for media, you will need to change the configuration of the system. Not all methods are equally safe - some require unlocking the bootloader or root rights, which can lead to loss of warranty.

Hardware Check: Does the Second Speaker Work?

Before you try to turn on stereo sound software, make sure that both speakers are physically healthy. On the Redmi Note 8 Pro, the top speaker (also spoken) often gets clogged with dust or fails after falls. Here's how to check its performance:

• 📞 Call your phone from another device and listen, the sound must come from the top speaker during the conversation. If you can't hear it, the speaker is faulty.
• 🔊 Turn on voice recording in the Dictaphone app and hold the phone to your ear – during recording, the top speaker should emit a slight noise (this is microphone monitoring).
• 🎵 Run a YouTube video and alternately cover the lower and upper speakers with your finger, and if the sound is only lost when the lower speaker is closed, the upper speaker is not involved in the media.

If the top speaker doesn't work even when talking, it's a hardware problem. In this case, you can't turn on stereo sound, you need to repair or replace the speaker first. Contact Xiaomi's service center, as self-repair without experience can damage the plumes.

⚠️ Warning: Don't try to disassemble your phone yourself unless you're confident in your skills. On the Redmi Note 8 Pro, the speakers are soldered to the motherboard, and their plumes are extremely fragile. Mishandling can lead to contact breaks or damage to the microphone.

Method 1: Activate stereo sound through an engineering menu (without root)

The safest method is to use Xiaomi’s hidden engineering menu, which allows you to change the configuration of speakers without unlocking the bootloader, and is suitable for standard MIUI firmware (including the global and Chinese versions).

To open the engineering menu:

1. Open the Phone app.
2. Enter the combination: ##36446337## (code for speaker test).
3. Select the Hardware Testing option → Audio.
4. Go to LoudSpeaker and run a test of both speakers.

If both speakers are making sound in the test, but only the lower one is running normally, follow the following steps:

Enter the code ##36446337## in the Phone app

Go to Hardware Testing → Audio → LoudSpeaker Mode

Select the "Stereo Speaker" option (if available)

Save the settings and restart the phone

Check the sound in YouTube or music player-->

Some versions of MIUI may not have the Stereo Speaker option, so try the alternative code: ##586## (audio test). If you don't have the right settings, then move on to the next one.

⚠️ Warning: Do not change other options in the engineering menu without understanding their purpose. Incorrect settings can cause sound loss or microphone malfunctions. For example, changing the Receiver Gain or Speaker Gain values can make the sound too quiet or distorted.

Upper (conversational)

Lower (multimedia)

Both work, but the sound is mono.

I don't know how to check.-->

Method 2: Using applications for forced stereo

If the engineering menu fails, you can use third-party apps, which do not require root rights, but their effectiveness depends on the version of MIUI and the firmware installed.

• 🎧 SoundAssistant (from Samsung, but it works on Xiaomi) – allows you to adjust the balance between speakers and enable pseudostereo.
• 🔊 ViPER4Android (requires driver installation) is an advanced equalizer with virtual surround support.
• 📱 Mi Sound Enhancer (a special application for Xiaomi) – optimizes the sound for the speakers of the Redmi Note 8 Pro.

Let’s look at the example of SoundAssistant:

1. Download the app from Google Play.
2. Open the Stereo Speakers section.
3. Activate the option Force Stereo.
4. Set up the balance between the top and bottom speakers with a slider.

For ViPER4Android, you will need additional configuration:

1. Install the application and drivers (instructions for 4PDA).


2. Enable the FX handler in the settings.




3. Select the profile "Stereo Widening" or "Surround".




4. Adjust Speaker Optimization settings for the Redmi Note 8 Pro.

Important: ViPER4Android can conflict with the system sound drivers MIUI. If after installation, the sound is lost, delete the application and restart the phone.

💡

If the sound is quieter after installing SoundAssistant, try turning off the Safe Sound option in the app settings. It limits volume to protect the speakers.

Method 3: Modified firmware with stereo support

The most radical, but also the most effective method is to install custom firmware with stereo sound already activated.

• 📱 Pixel Experience is an Android One-based firmware with optimized sound.
• 🔧 LineageOS – stable firmware with open source.
• 🎵 MIUI by XDA are modified versions of MIUI with stereo patches.

The installation process requires:

1. Unlock the bootloader (official way through Mi Unlock Tool).
2. Installations of custom recavery (TWRP).
3. Flash firmware across the Recovery.

Detailed instructions for installing Pixel Experience:

1. Unlock the bootloader (details on the Xiaomi website).


2. Download TWRP for Redmi Note 8 Pro (version 3.5.2+).




3. Install the Recovery via fastboot:




fastboot flash recovery twrp.img




4. boot into TWRP and back up the current firmware.




5. Select the Pixel Experience (select the version for begonia).




6. After installation, do wipe cache/dalvik.

⚠️ Warning: Custom firmware installation resets warranty and may result in device locking if process is disrupted. On some versions of MIUI, Widevine L1 stops working after boot boot boot boot boot unlocked (no HD in Netflix/YouTube).

Method 4: Manual editing of configuration files (for advanced ones)

This method requires root rights and is intended for users familiar with ADB and system file editing. We will be reconfiguring the mixer_paths.xml, which is responsible for routing sound.

Step-by-step:

1. Get root access (via Magisk).
2. Install a file manager with root support (such as Solid Explorer).
3. Click here to get to /vendor/etc/mixer_paths_begonia.xml (for Redmi Note 8 Pro).
4. Find the lines responsible for speaker and receiver.
5. Change the <path name="speaker"> setting by adding support for the second speaker.

Example of changes (look for similar blocks):

<path name="speaker">


<ctl name="SLIM_0_RX Handset" value="1" />




<ctl name="QUAT_MI2S_RX Channels" value="Two" />




<ctl name="RX7 MUX" value="DEC5" />




<ctl name="RX8 MUX" value="DEC6" />




</path>

After editing:

1. Save the file and set the rights to 644 (rw-r--r---).
2. Reboot the phone.
3. Check the sound in YouTube or music player.

Critical detail: Incorrect editing of mixer_paths.xml can result in complete loss of sound or looping of the download.

💡

Editing system files is the riskiest method. If you're not sure about your abilities, use custom firmware or apps without root.

Typical problems and their solutions

Even after successful activation of stereo sound users of Redmi Note 8 Pro face typical problems.

If after all the manipulations the sound remains mono, check:

• 🔍 Version MIUI – On some builds (e.g., MIUI 12.5 Enhanced), stereo is locked at the software level.
• 📱 Updates – sometimes fixes come in later firmware versions.
• 🛠️ System File Integrity – If you have previously experimented with modifications, conflicts are possible.

Myths about stereo sound on the Redmi Note 8 Pro

The network is walking a lot of myths about the “hidden stereo” in the Redmi Note 8 Pro. Let’s analyze the most popular:

Myth 1: “The stereo is turned on by the secret code ##1234##”

In fact: There is no such code. All working combinations (#36446337##, ##586##) only lead to the engineering menu, where you need to manually adjust the settings.

Myth 2: “You just need to update your MIUI to the latest version.”

Reality: In official firmware, Xiaomi does not activate the stereo on the Redmi Note 8 Pro - this is a marketing solution.

Myth 3: “You can turn on stereo through the developer settings”

Truth: Developer Options doesn't have options for activating stereo sound. The only thing you can do is turn off Absolute Volume (only affects Bluetooth devices).

Myth 4: “Stereo only works on the Chinese version of MIUI”

Fact: There is no difference between global and Chinese firmware in terms of sound; stereo is included in the same way (or not included) on all versions.

Myth 5: “When you turn on the stereo, the phone will stop ringing.”

Explanation: The top speaker is used for both conversations and media, and if it's working, the calls will work fine. The only problems are when there's a hardware malfunction.

FAQ: Frequent questions about stereo sound