How to improve the sound of Xiaomi headphones: the complete guide

Smartphone and accessories owners from the Chinese giant often face situations where the standard sound of the device seems flat or lacks depth, especially in mid- and low-end models where software processing can be too aggressive or insufficient, but the hidden potential of the audio track is often left untapped due to basic factory settings aimed at the mass consumer.

Fortunately, the Android operating system in the shell of MIUI or HyperOS provides the user with powerful tools for fine-tuning the audio. You do not need to be a professional sound engineer to achieve pure bass and detailed high frequencies.

Before we get to the tricky side of the game, it’s important to understand that sound quality is not just about software sliders, but also about the physical compatibility of the devices and the quality of the original audio stream. We’ll look at both the software and hardware aspects that will help you make the most of your Xiaomi Mi True Wireless Earbuds pair or wired headsets.

Basic audio profile settings in MIUI and HyperOS

The first step to perfect sound is to have a proper configuration of the built-in equalizer. Standard presets like Rock or Pop often distort the frequency balance, making the sound unnatural. The best way to use manual tuning is to tailor the frequencies to the acoustic features of your headphone model.

To access these settings, you need to go to the Settings menu → Sound and Vibration → Sound Effects. Here you will see sliders divided by frequency ranges. By raising or lowering them, you can compensate for the lack of low frequencies or mitigate the sharp high tones that often cut the ear in cheap drivers.

Special attention should be paid to the Dolby Atmos function, which is often turned on by default, but works in suboptimal mode. Switching the profile from "Automatic" to "Video" or "Music" can dramatically change the scene. In some cases, completely disabling spatial sound gives a more honest and direct presentation of material, especially for vocal compositions.

⚠️ Warning: Excessive amplification of low frequencies (bass) at maximum volume can lead to speaker wheezing or even mechanical damage if the driver is not designed for such loads.

Remember that settings can be reset when you update your firmware or reset your phone. It is recommended to take screenshots of successful equalizer configurations to quickly restore them in the future. It is also worth checking whether the Adaptive Sound feature is activated, which tries to automatically adjust frequencies to ambient noise, often degrading quality.

Use of advanced Bluetooth codecs

The quality of wireless audio transmission depends on the chosen codec. Standard SBC codec provides basic quality, but strongly compresses the audio stream, cutting high frequencies and adding artifacts. For owners of Xiaomi devices, it is important to activate support for more advanced formats such as AAC, aptX or LDAC.

To check and change the codec, you need access to the developer menu. → The phone. → Press 7 times on "Version" MIUI", Then go back to the main menu and select additional → For developers, in the Audio section, look for the Bluetooth Audio Codec".

• 🎧 SBC — Basic codec, available everywhere, but has low data quality and high latency.
• 🎵 AAC — standard for Apple devices, provides good compression quality without large losses, optimal for streaming.
• 🚀 aptX / aptX HD — Qualcomm technologies that provide bitrate higher than the CD, Minimal latency, ideal for Android.
• 🌊 LDAC — Sony codec that transmits three times more data than standard Bluetooth requires support from headphones.

If your headphones support aptX Adaptive or LDAC, but the phone only offers SBC, the problem could be with the drivers or Bluetooth version.Make sure both devices are close together when paired, as handshake protocol to select the codec occurs at the time of connection.

It's worth noting that choosing a high-bitrate codec increases power consumption. If battery life is more important to you than audiophile quality, it makes sense to leave the standard AAC or even SBC. However, for critical listening to music, the difference between SBC and aptX HD will be heard with the naked ear.

Xiaomi’s Secret Codes and Engineering Menu

In the back of Xiaomi's system, there's a hidden engineering menu that allows you to run hardware tests and adjust the parameters of the audio track at a low level. USSD-Phone is a powerful tool, but it needs to be careful, because changes can affect the microphone and speakers.

The most useful code to check and customize is ##6484## or ##4636##. Depending on the version of MIUI, the menu may be called CIT or Testing. We are interested in the section related to audio, often referred to as "Audio" or "Speaker." Here you can check the performance of each channel separately.

Sequence of action:


1. Open the dialer (bell ringer).




2.Type ##6484###




3. Select "Speaker" or "Receiver".




4. Conduct a test to reproduce tones of different frequencies.

In some versions of firmware, you can change the microphone or speaker through the engineering menu, but changing dB values directly without understanding the physics of the process can cause the sound to become quieter or distorted. It's better to use this section for diagnostics: if you hear wheezing on the test tone, the problem is hardware.

⚠️ Warning: Do not change the values in the Audio Debug or Volume Step sections unless you know exactly what they are responsible for. Incorrect settings can lead to a decrease in volume or the disappearance of sound in one of the channels.

There is also code ##3646633## that opens a deeper engineering menu (MediaTek devices). Here in the Hardware Testing tab -> Audio you can find LoudSpeaker Mode settings. Changing Digital Gain settings can add volume, but the risk of damaging the speaker increases exponentially.

Third-party equalization applications

If MIUI is not enough, third-party apps come to the rescue, intercepting the audio stream and processing it before sending it to the DAC. The leader in this area is the Poweramp Equalizer app, which works on most Android devices, including Xiaomi.

The main advantage of these applications is the presence of a 10-band or even 16-band equalizer, which gives much more accurate control than the standard 5 bands. In addition, they allow you to adjust Preamp, which is critical when using headphones with high sensitivity or, conversely, tight studio models.

Another powerful tool is Wavelet. This app is unique in that it contains an AutoEq database for thousands of headphone models. You can find your Xiaomi Piston Buds or Mi In-Ear Headphones Pro on the list, and the app automatically adjusts the frequency response to the perfect sound.

When using third-party equalizers, it is important to monitor battery resources. Constant real-time sound processing can increase the load on the processor. It is recommended to turn off spectrum visualization in the background and use application optimization in the MIUI settings so that the system does not “kill” the equalizer in the background.

The Impact of Source Quality and Streaming Services

Even the most expensive audio system won't make a poor quality file sound better. Many users forget that standard quality streaming on social networks and instant messengers is very compressed. To assess the real potential of headphones, you need to use services that provide Hi-Res or Lossless audio.

Services like Apple Music, Tidal or Yandex.Music (in High mode) offer lossless tracks. In the settings of the player app itself, make sure that the option "High quality" or "Lossless" is enabled. When using the mobile Internet, you should be aware of traffic consumption, so it is better to download tracks in advance via Wi-Fi.

Also, you should pay attention to the format of music storage locally. Converting old MP3 files to FLAC will not improve their quality, but only increase their size. The source should be quality initially. If you listen to music through YouTube, remember that even with a Premium subscription, the maximum bitrate there is limited to the Opus codec or AAC, which is still better than the free version, but is not Lossless.

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Use local players like Poweramp or Neutron Music Player to play FLAC files. They bypass Android system limitations and deliver sound directly to the DAC, bypassing the unnecessary processing steps of the Android mixer.

Physical factors and accessory maintenance

You can't discount the physics. Contamination of the speaker's mesh with earwax or dust is the most common cause of sound deterioration, especially at high frequencies. Sound becomes deaf, detail disappears. Regular cleaning can do wonders, returning the headphones to their original sound.

Use a soft toothbrush or special sticky band (blu-tack) to clean. Alcohol or aggressive solvents are best avoided as they can damage the membrane's adhesive layer or plastic case. Carefully brush the net, removing plaque, but do not press too hard.

Another physical factor is the density of the fittings. With Xiaomi headphones, there are often interchangeable nozzles of different sizes. If the size is wrong, the bass will be small and the sound insulation will deteriorate. Try all the sizes to find one that provides tightness.

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Regular cleaning of speaker grids and the correct size selection of earpieces can improve the sound of budget headphones more than any equalizer software settings.

Also check the cable if you use a wired model. Bending, internal fractures of the vein or oxidation of contacts in a 3.5 mm connector can create cracking and channel loss. Using a quality adapter (DAC) for USB-C headphones can also significantly improve the signal compared to a cheap standard adapter.

Frequently Asked Questions (FAQ)