Modern wireless headphones from Xiaomi, Redmi and Poco often offer great design and stable connectivity, but many users face one common problem: insufficient maximum volume, especially in noisy places such as the subway, busy streets or the gym, where background noise overshadows the quiet details of music compositions.
Fortunately, in most cases, the problem can be solved without buying new equipment or going to a service center. There are several proven methods to bypass software constraints and get the most out of your system. TWS-We're going to look at both the standard interface settings and the more advanced engineering codes available on smartphones. MIUI HyperOS.
It is important to understand that raising the volume above factory limits can lead to distortion of sound or discomfort to hearing during long listening. So before you start manipulating, make sure that your headphones are healthy and fully charged. Next, we will discuss in detail each step that will help you adjust the audio stream exactly as you need.
Basic check of connected devices and volume
The first thing to do is to eliminate the basic errors that often go unnoticed. In the Android operating system, there is an independent volume control mechanism for various profiles: multimedia, calls, alarm clock and system sounds. Often, the volume slider of the call is twisted to the maximum, and the multimedia responsible for music and video remains at the average level. Check this by pressing the side buttons of the adjustment and deploying the additional menu.
Also worth paying attention to the state of the headphones themselves. Some Xiaomi models have touch controls that can be blocked or knocked down. Try pressing the touch zone or physical button several times to make sure the device is not in "silence mode." Also, make sure that the Xiaomi Earbuds or Mi Buds app does not activate "Transparency" or "Noise suppression" mode with aggressive settings that can reduce the overall volume of playback.
Keep the speakers clean, the sulphur and dust that accumulates in the speaker grid can reduce the volume of the sound by up to 50% and make it deaf, use a soft brush or dry toothbrush to clean the holes, and if the sound became cleaner and louder after cleaning, the problem was that the acoustic channels were contaminated.
Customization of equalizer and sound effects MIUI
The MIUI's built-in audio personalization tools provide powerful tools to correct the audio stream. To access them, go to Settings → Sound and Vibration → Sound Effects. Here's a graphical equalizer that allows you to manually adjust frequency ranges. By lifting all the sliders upwards, you get a general signal amplification, but this can lead to wheezing at low frequencies.
A more intelligent approach would be to use presets. Choose a Rock or Pop profile, which typically has a raised middle and high frequencies, which subjectively makes the sound louder and clearer. Also look at the Mi Sound Enhancer switch. The inclusion of this feature often gives a noticeable increase in volume and detail, adapting the sound to the type of headphones connected.
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Include the function “Adaptive sound” in the menu of sound effects, so that the smartphone automatically adjusts the equalizer to a specific model of connected headphones Xiaomi.
In the same menu, find the "Absolute Volume" setting. If this is active, try turning it off or on, the behavior of the system may vary depending on the firmware version and the Bluetooth chip model. Sometimes, it is the switching of this setting that resolves the desynchronization of the volume levels of the phone and headphones.
Engineering menus and hidden codes to amplify sound
For users who are ready for a deeper intervention, there is an engineering mode available. This is a hidden settings section designed to test hardware, but allows you to change the audio output settings. To get there, open the Phone app and type in code ##6484#. If the code does not work, your firmware version may be blocking direct access and you will need to install a special activator application.
In the CIT menu that opens, you need to find the audio section. The path may be different, but most often it is Audio → Advanced Config or Speaker. Here we are interested in the Headset Volume setting or the similar one responsible for the volume in the headphones. Be extremely careful: changing the values in other sections can lead to unstable smartphone performance.
What to do if the engineering menu is not opened?
When you change the settings, make sure you press Set or Apple, and then restart the device. Check the result. If the sound gets too loud and there's a lot of distortion, return the values to their original position. Remember, maximum digital amplification always brings artifacts into the sound signal.
Use of third-party amplifiers
If built-in tools are not enough, specialized applications from the Google Play store come to the rescue, with leaders in this category being Volume Booster GOODEV, Bass Booster and Equalizer & Volume Booster, which create a software layer on top of the system mixer, allowing you to amplify the signal to 60% or more above the standard maximum.
The way these tools work is simple: they intercept the audio stream before sending it to a Bluetooth module and use digital (gain), but this method has a downside. Excessive amplification can lead to overloading of headphone speakers, especially if they have a small membrane diameter, as in the models of Redmi Buds 3 Lite or Mi True Wireless Earbuds Basic.
When using amplifiers, watch the congestion indicator (usually lit in red). Do not allow constant work at limit values, as this can cause failure of not only the software, but also the physical speaker. Optimally set the gain in the range of 10-20%, which is often enough for a comfortable listening.
Comparison of Xiaomi headphone models by volume potential
Not all of the Chinese giant’s wireless headphones sound the same loud, with the difference being driven by the size of the drivers, the Bluetooth codec version and the body design, and the table below compares popular models by subjective volume and technical features.
| Model headphones | Dynamics diameter | Max. Volume (subjectively) | Feature |
|---|---|---|---|
| Xiaomi Buds 4 Pro | 11 mm | Tall. | Double driver, powerful bass |
| Redmi Buds 4 Active | 12 mm | Medium | Emphasis on autonomy, quiet HF |
| Mi True Wireless 2S | 14.2 mm | Very high. | Big speakers, open sound. |
| Xiaomi FlipBuds Pro | 11 mm | Tall. | Excellent noise cancellation. |
As you can see from the table, models with dynamic drivers of large diameter (12-14 mm) are physically able to produce louder sound due to a larger stroke of the membrane. If volume is critical for you, then you should focus on this parameter, not just on the brand, when choosing the next pair.
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Headphones with a larger speaker diameter (from 12 mm) will always sound louder and larger at the same power of the smartphone amplifier.
Turning off the absolute volume of Bluetooth
One of the common causes of silent sound is the de-synchronization of volume levels between the phone and the headphones. The AVRCP Bluetooth protocol allows the control device (smartphone) to fully control the volume of the receiving device (earphones), sometimes this mechanism works incorrectly, and the phone "thinks" that the sound is twisted 100%, while in headphones it remains at 50%.
To fix this, turn off absolute volume. Go to Settings → About Phone → Version of the kernel (click 7 times to turn on Developer Mode). Then go to Advanced Settings → For Developers. Find Disable Absolute Volume and activate it.
Once you turn on this option, you need to completely reconnect the headphones: remove them from the list of paired devices and create a pair again. Now the volume sliders on the headphone case (if any) and on the phone will work independently, allowing you to twist the volume on the headphones themselves to maximum, and then add volume from the phone.
Cleaning and maintenance of audio channels
Often, the problem of "quiet" headphones is solved by a banal cleaning. Earwax has the ability to harden and clog the small mesh speakers. Visually, the mesh may seem clean, but the holes can be filled with fat deposits.
☑️ Headphone cleansing
To clean, use isopropyl alcohol (no more than 70%) and a cotton swab, removing the excess cotton so that the villi do not get stuck inside. Walk along the grid in a light circular motion. You can also use the "scotch" method: glue a piece of sticky tape to the net and sharply pull back, pulling the dirt out of the pores.
⚠️ Warning: Never use sharp objects (needles, toothpicks) to pick through the speaker grid.You can pierce the membrane or damage the protective layer, leading to irreversible sound deterioration or complete failure of the speaker.