Owners of the flagship smartphone Xiaomi Mi 9 often face the desire to improve the standard sound of built-in speakers or headphones. the standard audio track of this device is based on Qualcomm codecs, which, when properly set up, are able to produce detailed and rich sound, but standard presets are often too "flat" or excessively bass. The correct configuration of the frequency range allows you to unlock the potential of the audio system, making the vocals cleaner and the instrumental more voluminous.
Before we make any changes, we need to understand that the equalizer is a signal amplitude-frequency correction tool. The MIUI that is installed on the Mi 9 has a fairly advanced audio processing software module that supports Dolby Atmos and Hi-Fi modes. Ignoring these settings is like using an expensive camera without manual focusing: you won't get the results that the hardware can.
In this guide, we will take a closer look at the regular customization tools, the hidden features of the engineering menu, and the installation of third-party software for those who lack standard functionality. The key is the balance between volume and quality: excessive low-frequency amplification on the Mi 9 can lead to distortion (clipping) due to the physical limitations of the speakers. Let’s start with basic device preparation.
Basic setting of the regular equalizer in MIUI
The first step for any user is to activate the built-in tools. Unlike older versions of Android, modern MIUI shells offer integrated access to audio settings without the need to install add-ons. To get to the right menu, go to Settings → Sound and vibration → Sound quality and effects. This is where the main frequency control lever is located.
In the menu that opens, you'll see the Equalizer switch, which can be turned off by default. Once activated, you'll see a graph with sliders that correspond to different frequency bands. The standard Normal mode often sounds a bit boring, so it's recommended to switch to User mode right away or select one of the presets, such as Rock, Pop or Jazz, and adapt it to suit yourself.
Special attention should be paid to Dolby Atmos technology, which is also available on this menu, it creates a surround effect, which is especially noticeable when watching videos or playing games. However, to listen to music in high resolution, many audiophiles recommend turning off virtualizers, as they can “blur” (details) of the original track, adding artificial reverberations.
When manually adjusting sliders, it is important not to make sharp jumps. Smooth change in the range of 3-5 dB usually gives a more natural result than extreme rises of 10-12 dB. Remember that the goal of the equalizer is to compensate for the shortcomings of the reproducer or track features, not completely change its timbre.
Detailed configuration of frequency ranges
To get really good sound, you need to understand what each slider on the equalizer graph is responsible for. In the standard interface, Xiaomi Mi 9 usually has 5 to 9 bands of regulation. Lower frequencies (20 Hz – 250 Hz) are responsible for the bass component: drums, bass guitar, synthesizer bottoms.
The average frequencies (250 Hz – 4 kHz) are the most important range for human perception, because it is the main spectrum of the human voice and most musical instruments. Explosiveness in this range will make the sound “telephone” or sharp, and the lack of it will be deaf and slurred. Upper frequencies (4 kHz – 16 kHz and above) add airiness, ringing to the plates and give the recordings transparency.
The recommended setup scheme for universal listening on the Mi 9 is as follows:
- 🎵 Low frequencies (60-120 Hz: Lift on. +2...+4 dB to add density to bass, but make sure the sound doesn't hum.
- 🎵 Average low (250-500 Hz: Leave unchanged or lower slightly (-1 dB) if the sound appears to be “porridgeous».
- 🎵 High frequencies (8ce-16to Hz: Lift on +1...+3 dB for the appearance of "air" and detailing the tops.
There's a popular setting known as the V curve, where lows and highs are raised and mid (middle) is lowered.This makes the sound more energetic and vibrant, which is great for modern pop and electronics, but can tire the ears when listening to classics or jazz for long periods.
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Use the function “Sound Adaptation” in Bluetooth settings, if you connect wireless headphones – the system itself will adjust the frequencies to the headset model.
Use of Dolby Atmos and Sound Scripts
Dolby Atmos on the Xiaomi Mi 9 is software-based and works as a post-processor, and it doesn't just change the frequencies, it processes the sound scene to create the illusion of three-dimensional space, and you can activate it from the same Sound Quality and Effects menu, and you can find different profiles: Auto, Film, Music, Voice.
Mode "Film" greatly expands the stereo, making dialogue more legible and explosions deeper. For music, the best mode is "Music" or "Auto", which try to maintain the original panorama of the track, only slightly expanding it. However, it is worth noting that the inclusion of Dolby Atmos can slightly increase battery consumption, although on modern Snapdragon processors this effect is minimal.
Some versions of MIUI also have a section called "Sound Scenarios" or "Sound Effects" where you can customize the behavior of your smartphone in different situations, such as amplifying notifications or changing the timbre of a call, which does not directly affect the musical equalizer, but forms the overall acoustic environment of the device.
⚠️ Attention: Simultaneously turning on maximum equalizer values and activating Dolby Atmos at maximum volume can lead to speaker wheezing. Xiaomi Mi 9 has high-quality but compact speakers that do not like amplitude overloads.
If you use a smartphone for gaming, Dolby Atmos’ Game mode can help you hear your opponent’s footsteps better by highlighting high frequencies, which gives you a tactical advantage in shooters where audio information is critical.
Third-party applications for advanced configuration
Staff funds are sometimes not enough for demanding users, especially if you use streaming services that can ignore the system equalizer. In such cases, third-party applications from Google Play come to the rescue. One of the most popular and functional solutions is Poweramp Equalizer.
This app runs on top of the system audio track and allows you to apply your settings to almost any player. It supports 16-band equalizer, which gives you much more accurate control over the frequencies than the standard 5-7 bands in MIUI. In addition, there are separate preamp controls, which allows you to compensate for the loss of volume when cutting frequencies.
Another powerful tool is the Bass Booster app or specialized players like Neutron Music Player, which have their own sound processing engines (DSPs) that can do wonders with budget acoustics but take time to learn the interface.