How to amplify the sound in headphones on Xiaomi: from settings to engineering menu

The quiet sound in Xiaomi headphones is a common problem faced by owners of Redmi, POCO and Mi smartphones. The reasons can lie both in the software limitations of the MIUI system and in the hardware features of the headphones themselves. For example, Xiaomi budget models often artificially lower the volume through the EU Volume Limit standards, and low-quality wires lose up to 30% of the signal on resistance.

In this article, we'll look at 7 proven ways to turn up the volume, from basic audio settings to working with engineering menus and third-party utilities. Importantly, not all methods are safe for speakers! We'll point out the risks and warn against critical errors. If the sound remains quiet after all the manipulations, the problem may be physical damage to the headphones or a 3.5 mm jack (if any).

1. Removing volume limit in MIUI settings

By default, MIUI blocks the maximum volume due to European hearing protection standards.

1. Open the Settings. → Sound and vibration.
2. Slip on Volume and go to Additional Settings (Icon) ⚙️ top-right).
3. Turn off the Volume Limitation (EU) option.

If there is no Volume Limit, your firmware is not European (e.g. global or Chinese), in which case the limit is removed via the engineering menu (see Section 4).

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After turning off the restriction, check the sound at minimum volume - if wheezing appears, then the headphone speakers are already worn out.

Some models (POCO F3, Redmi Note 10 Pro) may display a warning instead of a volume slider that says, "Exceeding the safe level can damage hearing." This can be ignored, but remember: prolonged listening at >80% can lead to irreversible hearing changes.

2. Equalizer and sound effects setup

MIUI has an equalizer built in that can artificially raise volume at certain frequencies to activate it.

1. Go to Settings → Sound and vibration → Equator.
2. Choose a Bass or Rock preset – they amplify the low and medium frequencies, which subjectively makes the sound louder.
3. Manually lift sliders at 60 Hz, 230 Hz and 910 Hz at +3... +5 dB.

For models with Qualcomm Snapdragon (for example, Xiaomi 11T, POCO X3 Pro), an extended equalizer Dirac Audio Tuner is available:

• 🎧 Activate in Settings → Additionally. → Special effects.
• 🔊 Select a Dynamic or Movie profile.
• 📈 Manually increase Loudness (volume) to +6 dB.

If you don't have a built-in equalizer, install a third-party one: Wavelet (for Android 10+) or Poweramp Equalizer (requires root for full control), which bypass the limitations of MIUI and allow you to squeeze the most out of your headphones.

3. Checking connectors and cables

If the sound is quiet only in wired headphones, the problem may be oxidation of the contacts or damage to the cable.

1. Clean the 3.5mm connector: take a toothpick, wrap it in cotton, moisten it in alcohol and clean the hole carefully. Don't use metal objects!
2. Test with other headphones: plug in the headphones, and if the sound gets louder, the problem is your headphones.
3. Check the cable: bend the wire at the base of the plug. If the sound starts to break, the cable is damaged.

For USB-C headphones (such as Xiaomi Type-C Earphones), additional steps are:

• 🔌 Reconnect your headphones – sometimes contact is lost due to dust in the port.
• 🔄 Reboot the phone - a glitch in the protocol USB Audio can lower the volume.
• 🛠️ Update the firmware - in older versions MIUI were bugs with USB-C audio.

On Bluetooth headphones (Mi AirDots, Redmi Buds), quiet sound is often associated with codecs. Go to Bluetooth Settings → Sound settings and select SBC over AAC - the latter can "cut" volume to save energy.

4. Engineering menu: hidden volume settings

If standard methods don't work, it's time to get into the Engineering Mode, which is a hidden section of MIUI where you can manually adjust the sound amplification.

Instructions for Qualcomm Snapdragon (most Xiaomi):

1. Open the Phone app and type ##36446337##.
2. Go to Hardware Testing → Audio → Headset Mode.
3. In the Level field, set the value of 140 (maximum for most models).
4. Press Set and restart the phone.

For MediaTek (e.g. Redmi 9A, POCO C31):

1. Enter the code ##36446337## or #4636###.
2. Select Hardware Testing → Audio → Normal Mode.
3. Set Max Vol to 160 (not higher!).

Do not exceed Level 150 for Snapdragon

Do not change the microphone settings (may break)

Keep the initial values before the changes

Reboot your phone after the changes-->

⚠️ Attention: Set the Level Value >150 on Qualcomm or Max Vol >160 on MediaTek can cause the phone's amp to burn out. Symptoms: distorted sound, crackling, no audio at all.

5. Third-party applications for sound amplification

If system methods don't work, try specialized utilities that bypass MIUI limitations and work at the driver level.

To install ViPER4Android on Xiaomi, you will need:

1. Get root rights (for example, through Magisk).
2. Install the V4A FX driver from the XDA repository.
3. In the application settings, activate Master Limiter and raise Pre-Amp to +3... +5 dB.

⚠️ Note: Apps like Volume Booster GOODEV Speaker Boost or Speaker Boost often contain malicious code. Install software only from official sources (Google Play, XDA, 4PDA).

Hardware solutions: amplifiers and adapters

If the software is exhausted and the sound is still quiet, consider external amplifiers, which connect between the phone and the headphones and physically amplify the signal.

Options for Xiaomi:

• 🎵 Portable DAC/amplifiers: Xiaomi USB-C to 3.5mm DAC (formal, ~1500₽) FiiO BTR3K (Bluetooth + booster, ~6000₽)
• 🔌 Enhanced adapters: UGREEN USB-C to 3.5mm (chipboard CS43131) Apple USB-C to 3.5mm (It also works with Xiaomi)
• 🔊 Replacement of headphones: Models with impedance <32 Ohm (e.g, KZ ZSN Pro X) Neodymium magnet headphones (higher sensitivity)

Bluetooth headphones are suitable for external transmission with support for aptX HD or LDAC (for example, Creative BT-W5), which bypasses the limitations of the built-in Bluetooth module Xiaomi and transmits sound without loss.

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Hardware amplifiers are the only safe way to significantly increase the volume without the risk of damaging your phone or headphones.

7. fault diagnosis: when it's time to go to service

If none of these methods worked, it could be hardware, and here are the signs that it's time to bring the phone to service:

• 🔇 The sound disappears completely when you connect the headphones.
• 🔊 In the speaker of the phone can be heard cracking or wheezing.
• 🔌 3.5mm connector (if any) wobbles or bends.
• 📱 The phone doesn’t see headphones, but they work on other devices.

Typical faults and their repair costs:

Before the service visit:

1. Make a backup of the data (Settings → About Phone → Backup).
2. Reset your network settings (Settings → Network & Internet → Reset Wi-Fi, Mobile Network and Bluetooth).
3. Check the warranty – if the phone is warranty, do not open it yourself!

FAQ: Frequent questions about the sound in headphones Xiaomi