How to improve the sound quality in Bluetooth headphones Xiaomi

Many owners of low-end and mid-end wireless headsets from the Chinese giant often experience the feeling that the device’s potential is not fully realized. Standard settings preset by the manufacturer are often focused on the mass user, which leads to averaging frequencies and loss of detail in certain tracks. However, knowing a few technical nuances and secrets of the MIUI or HyperOS operating system can significantly transform the acoustic picture.

In this article, we will not only look at the obvious equalizer settings, but also touch on the deeper system parameters available through the engineering menu and third-party utilities. You will learn how to choose the right data codec, eliminate audio delays and even software to “pump” the drivers of your Mi True Wireless Earbuds or wired models with a Type-C connector.

Before we go to radical methods, we need to make sure that the basic connection and physical condition of the accessories are normal. Often the problem is not the software, but the banal contamination of the speaker grid or the low bitrate of the original file. Let's start with the fundamental steps that each user must follow before fine-tuning.

Basic Connection and Codec Optimization

The first step to high-quality sound is to ensure a stable and high-speed connection between the smartphone and the headset. Audio data protocols play a critical role: the standard SBC codec often “cuts” high frequencies and compresses dynamic range, which makes sound flat. Modern Xiaomi devices support more advanced formats such as AAC and aptX, which are able to transfer significantly more detail.

To check and change the current codec, you will need to activate the developer menu. This is a secure procedure that opens access to hidden Android features. Go to Settings → About Phone and quickly click 7 times on the MIUI Version (or OS Version). Once the notification appears, go to Additional → For Developers and find the Bluetooth Audio Codec section.

⚠️ Warning: Forced codec that is not supported by your headphone model will result in no sound or permanent connection breaks.

Choosing the best codec depends on your priorities: if you want maximum compatibility and work with iOS, leave AAC. If you use Xiaomi’s flagship smartphone and Mi True Wireless Earbuds Pro headphones, try switching to LDAC or aptX Adaptive for high-resolution audio. Remember that using high-bitret codecs can be more battery-consuming.

Fine tuning of the system equalizer

Xiaomi’s built-in audio processor has powerful frequency correction tools that users often ignore. Standard presets like Rock or Pop are rarely suitable for all tracks, so creating your own profile is the best way to improve your music experience. To access the full functionality, go to Settings → Sound and Vibration → Sound Effects.

Here you will find a graphic equalizer with several sliders. To get a clear and detailed sound, it is recommended to use the so-called "smile" or its variations: slightly raise the low frequencies (bass) and high (air), leaving the average frequencies flat or slightly lowered, this allows you to remove the "porridge" in the vocals and add shock to the bass without overloading the mix.

The Mi Sound Enhancer feature is worth a special attention. This artificial stereo expansion algorithm can do wonders with budget drivers, creating the illusion of a wider scene. However, on some tracks, this feature can add unnatural artifacts, so try turning it on and off while listening to familiar songs.

• 🎚️ Low frequencies (60-250 Hz: Responsible for the depth of the bass and the "body" of the sound, don't lift them higher 3-4 dB to avoid humming.
• 🎻 Mean frequencies (500Hz – 2kHz): The basis of vocals and most instruments, accuracy is important here, not volume.
• 🎺 High frequencies (4 kHz - 16 kHz): Adds ringing, detailing of plates and hissing consonants, but excess will lead to sharpness.

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Before setting up the equalizer, drop all sliders to zero and listen to the track in its original form to understand what frequencies your headphone model is missing.

Use of third-party audio players and DSP

Xiaomi’s regular player, while functional, often uses its own audio compression, which can interfere with fine tuning. Audiophiles looking to make the most of their Redmi Buds or wired models are encouraged to install specialized software. The leader in this field is the Poweramp application, which has its own, more advanced decoding engine.

Another powerful tool is the Wavelet system utility, which works at the operating system level and allows you to apply auto-correction to thousands of headphone models based on measured frequency characteristics. If your model is not on the list, you can use parametric equalizer or AutoEq for manual profile selection.

Installation of a third-party player:


1. Download APK- file or install from Google Play.




2. In the phone's sound settings, turn off "Mi Sound Enhancer."




3. In the player settings, enable Direct Output).




4. Enjoy sound without system processing.

It is important to understand that using third-party software can conflict with the system settings of Bluetooth. If you notice the desynchronization of sound and video in messengers or YouTube, try to disable the audio improvements in the player itself and leave only system settings.

Secrets of the Xiaomi Earbuds application and firmware

The official Xiaomi Earbuds app (formerly known as Mi Buds) is a must-have tool for proprietary acoustics owners.This is where settings that are not available through the standard Bluetooth menu are hidden. First, check the updates section: Xiaomi engineers regularly release patches that improve connection stability and ANC noise reduction algorithms.

Within the app, unique audio profiles are often available that are designed specifically for your model. For example, the Mi True Wireless Earbuds Basic 2 series may have a minimal latency Game mode that significantly changes the way media content sounds, and you can also customize gesture management, which indirectly affects usability.

Some models allow you to adjust the level of active noise cancellation. If you are in a quiet room, turning on Transparency mode or completely turning off the ANC can improve the naturalness of the sound, since the processor will stop trying to suppress non-existent noises by contributing artifacts.

⚠️ Warning: During the update of the firmware headphones in any case do not open the case cover and do not remove the smartphone. interruption of the process may lead to the inability to continue using the device.

Engineering menu and hidden Android settings

For advanced users who are not afraid to experiment, there is access to the engineering menu through the code ##6484##. Although the main functionality here is sharpened for testing iron, in some versions, there are also some versions of the software. MIUI You can find additional audio tests, but the more effective method is to use the audio test. ADB-commands to change global Bluetooth parameters.

With the command line on your computer and a USB-connected smartphone, you can force codec support to turn on or change buffering. For example, a command to scale up animations can indirectly affect the interface response rate when switching tracks, although the sound quality is not directly affected. Deeper changes require root rights and installation of Magisk modules such as ViPER4Android.

If you decide to install audio modification modules, make sure to make a full backup of data. Changing the audio system libraries can lead to a cyclic restart (bootloop) if the drivers are not compatible with the version of the kernel of your smartphone.

Physical factors and maintenance

The physical condition of the headphones is not to be discounted; the sulphur and dust accumulated on the speaker grid can reduce the volume and drown out high frequencies by 30-40%; regular but careful cleaning using a soft brush and isopropyl alcohol will return the original dynamics of the sound.

Also important are the earpieces. Standard silicone nozzles may not provide adequate insulation, which causes bass loss. Try replacing them with a foam or a different size nozzle. A tight fit to the ear canal is critical for passive noise reduction and proper bass response formation.

• 🧼 Cleaning the net: Use a soft toothbrush soaked in alcohol, gently walking along the surface without pressing inwards.
• 🔋 Contact charge: Oxidized contacts in the case can uneven charge of the left and right earphone, which knocks the sound balance.
• 📶 Avoid using Bluetooth headphones near powerful Wi-Fi sources (routers) or microwave ovens.

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The sound quality is 50% dependent on the correct fitting of the earpiece in the ear – experiment with the size of the earpieces to achieve better tightness.

Frequently Asked Questions (FAQ)