How to improve the sound in Xiaomi: professional setting

Modern Xiaomi smartphones, including the Redmi and Poco series, often have multimedia capabilities that may not satisfy demanding users by default. Standard audio profile settings often hide the potential of speakers or Bluetooth headsets, limiting frequency range. Many owners do not even realize that powerful tools for fine-tuning audio are hidden inside the MIUI or HyperOS system.

In this article, we'll look at not only the obvious volume sliders, but also the deep-seated system parameters available through the engineering menu and third-party utilities. You'll learn how to activate hidden codecs, adjust the equalizer to a particular genre of music, and fix the problem of quiet sound in a conversational speaker. Quality sound is the result of the right calibration, not just expensive hardware.

Before we get to the tricky part, we need to understand the current state of your device's audio system. Often the problem isn't the hardware, but the software constraints of the region or the driver failure. We'll look at the techniques that are relevant to most current models, from budget to flagship.

Basic audio profile settings in MIUI and HyperOS

The first step to improving audio perception should be to fine-tune standard system settings. Xiaomi’s operating shells provide a basic but functional equalizer. To access it, go to Settings → Sound and Vibration → Sound Effects, where the user can choose one of the profiles or create their own.

Pay attention to the Dolby Atmos feature, if available on your model. This surround sound algorithm can expand the stage significantly and add depth to the bass, but do not overuse the amplification of high frequencies, as this can lead to unpleasant wheezing at the maximum volume of the built-in speakers.

⚠️ Attention: Excessively amplifying low frequencies in a standard equalizer can cause a resonance of the smartphone body and cause the speaker to rattle.Be careful with sliders below 100Hz.

Also in this section, the option "Mi Sound Enhancer" is often found, which works as a software amplifier and analyzer, adjusting the output to the connected headphones. For built-in acoustics, this feature is better to disable, since it can cause digital distortion, making the sound "flat".

Activation of hidden audio codecs through the engineering menu

For advanced users who want to make the most of Bluetooth headphones or external DACs, there is access to an engineering menu, a hidden part of the system that allows you to manage supported data codecs. The standard set is often limited to an SBC codec that has a low bitrate.

To get into the menu, open the Phone app and enter the secret code ##6484##. In the test list that opens, find a section related to Bluetooth or Audio. You can force support for aptX, aptX HD or LDAC codecs here if the smartphone hardware supports them.

The path in the engineering menu (example):


Bluetooth Audio → Codec Selection → LDAC / aptX Adaptive

Enabling high-speed codecs requires support from the receiving device (headphones). If the headset does not support the format chosen, the sound may simply disappear or work with interruptions. So after changing the settings, be sure to conduct a test audition.

Use of third-party equalizers and amplifiers

When system tools are scarce, Google Play apps come to the rescue. Third-party equalizers can intercept audio streams and process them better than standard Xiaomi algorithms, and the leader in this niche is the Poweramp Equalizer app, which works at the Android core level.

Another powerful tool is Wavelet, which is unique in having an autocorrect base for thousands of headphone models. The app automatically applies a profile that aligns the frequency response of your model, which gives the most honest sound. Some features may require root access to work, but the base mode works without it.

• 🎚️ Poweramp Equalizer: Provides parametric equalizer with a huge number of bands and support for plugins Viper4Android.
• 🎧 Wavelet: perfect for automatic adjustment to a specific headphone model without manual tinkering with sliders.
• 🔊 Volume Control Plus: allows you to separately adjust the volume of media, calls and alarms, and also increases the maximum volume limit.

Android typically allows only one audio processor to be active. If all applications have lost sound after installing a new equalizer, remove the last audio software installed.

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Use Autostart in the MIUI security settings for third-party equalizers, which will prevent the application from turning off by the system when the RAM is cleared, and the sound will not be reset to standard.

Customize the sound for games and reduce latency

Gamers often face the problem of desynchronizing sound and image or insufficient detail of steps in shooters. In Xiaomi smartphones, Game Turbo is responsible for this, which allows not only to boot processor performance, but also to customize the sound scene.

Inside the Game Turbo, you can choose a Victory or similar sound profile that amplifies high frequencies, which makes the sounds of steps, recharges and shots more ringing and noticeable against the background music, and also features Sound Localization, which virtually expands the stereobase.

To reduce Bluetooth headphone delay, you can find the option “Bluetooth Audio Latency” in the engineering menu (as discussed above), but it is safer to use headphones with Low Latency mode or a game mode that is activated by touching the touchpad on the headphones themselves.

Resolving problems with quiet sound and wheezing

One of the frequent complaints of Redmi and Poco owners is that the sound is quiet in a conversational speaker or when listening through an external speaker. Before you carry the phone to the service, try software methods of solving. Often the problem lies in the Bluetooth absolute volume settings.

In the For Developer section (how to get there: Settings → About Phone → 7 times click on MIUI Version), find the item “Disable Absolute Volume.” Experiment with this switch: on some devices, turning it on solves the problem of quiet sound in Bluetooth, on others, turn it off.

⚠️ Warning: If the speaker only starts wheezing at maximum volume, don’t try to “design” it by playing test signals for a long time.

It's also worth checking the physical cleanliness of the speakers. The speaker grid is often clogged with dust and skin fat, which reduces volume by 30-40%. Clean it carefully with a soft toothbrush. For the lower multimedia speaker, you can use the Sound Cleaner app, which generates low-frequency waves to push dust out, but the effectiveness of this method is controversial.

Advanced customization through ADB (for experienced)

For users who are not afraid of the command line, there is the possibility of changing system audio files through the ADB (Android Debug Bridge.This method allows you to edit configuration files mixer_paths.xml, which control the amplification of the microphone and speakers at the driver level.

It requires a computer, a USB cable, and an installed set of Android platform tools. Once the phone is connected in debugging mode, you can enter commands to change (amplify), but this method carries a risk: an incorrect value can lead to overloading of the dynamic range.

Example of a command to check the status of audio:


adb shell dumpsys media.audio_flinger

A safer use case ADB — Change of global volume parameters. settings put global volume_control_speaker True (if supported by firmware) can unlock additional volume steps. But remember, changing system through ADB Can cancel the warranty and lead to unstable operation of the audio track.

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Using ADB gives you maximum control, but requires high skill, and for 95% of users, the equalizer and Game Turbo settings are enough.

Frequently Asked Questions (FAQ)