How to Make Two Xiaomi Wireless Headphones Work Together: The Complete Guide

Did you buy a second pair of Xiaomi headphones and want to use them at the same time as the first? Or did one of the headphones in the kit fail and you found a replacement from another model? Synchronizing two wireless headphones to one sound source is a non-trivial task, but doable. In this article, we will discuss all the working methods for Redmi AirDots, Mi True Wireless Earphones and other lines, including bypassing the manufacturer's restrictions.

The main problem is that the majority of TWS-Headphones (True Wireless Stereo) are designed by default to work in a pair of “left” + But with software tricks, special applications, or hardware adapters, you can make two independent earbuds play sound in sync. We tested all of these methods on current firmware in 2026, and we only selected those that work consistently.

Why don’t two Xiaomi headphones work together?

Before we get to the solutions, it’s important to understand the reasons for the restriction: Xiaomi manufacturers (like other brands) artificially block the ability to connect two separate headphones for several reasons:

• 🔊 Bluetooth Technical Limitations: Standard Protocol A2DP (Advanced Audio Distribution Profile does not support simultaneous audio transmission to two independent devices without delay.+ function LE Audio, which is not in all smartphones.
• 📦 Marketing policy: Companies are interested in selling full-fledged headphone sets, not individual "parts.
• 🔋 Battery discharge: The simultaneous operation of two headphones increases the load on the sound source (smartphone, laptop), which leads to a rapid discharge of its battery.

However, you can bypass these limitations. Next, we will consider methods from the simplest (using third-party applications) to the advanced (with headphone flashing).

Method 1: Using the SoundAssistant app (for Samsung and Android smartphones)

If you have an Android smartphone (especially a Samsung), the easiest way to sync two headphones is to use Samsung’s SoundAssistant app, which allows you to duplicate sound across two Bluetooth devices at once, even if they’re not from the same set.

Instructions:

1. Download SoundAssistant from Google Play (free).
2. Connect both Xiaomi headphones to your smartphone via Settings → Bluetooth.
3. Open SoundAssistant and go to Dual Audio.
4. Activate the option and select both connected earphones.

⚠️ Note: Some Xiaomi models (e.g. Redmi AirDots 3 Pro) may have a delay of up to 200 ms between headphones, due to different audio processing speeds by each device).

Connect both headphones to Bluetooth

Make sure your headphones are charged (>50%)

Disable other Bluetooth devices (columns, smart watches)

Enable the "Developers" mode (optional, for stability)

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Method 2: Bluetooth Dual Audio Application (Universal Method)

For owners of smartphones of other brands (Xiaomi, Realme, Google Pixel, etc.), the Bluetooth Dual Audio app is suitable. It emulates the Dual Audio function at the level of the Android OS, but requires ADB rights for full operation.

Step-by-step:

1. Install Bluetooth Dual Audio.
2. Connect both Xiaomi headphones to your phone.
3. Open the app and select both devices in the list.
4. Press Start Dual Audio. If the sound is not duplicated, make additional settings via ADB:

adb shell settings put global bluetooth_dual_app true

⚠️ Attention: On devices with MIUI 14+ You may need to disable battery optimization for the Bluetooth Dual Audio application. → Annexes → Application management → Bluetooth Dual Audio → Battery → No restrictions.

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If the sound is interrupted, try to reduce the bitrate in Bluetooth settings: go to Settings → Bluetooth → Additional → Audio quality and select Balanced over High.

Method 3: Using a Bluetooth transmitter with Dual Link support

If software methods fail or cause delays, the most reliable way is to buy an external Bluetooth transmitter with Dual Link support, which allows you to connect two headphones to a single sound source without lags.

Recommended transmitter models (tested with Xiaomi headphones):

How to connect:

1. Connect the transmitter to the sound source (TV, PC, smartphone) via 3.5 mm jack or USB-C.
2. Activate Dual Link mode on the transmitter (usually a long press on the power button).
3. Connect both Xiaomi headphones to the transmitter as a normal Bluetooth device.

Method 4: Reflashing headphones (for advanced users)

The only way to achieve perfect synchronization without delay is to reflash the headphones on customized firmware with support for Master-Slave mode. This method is only suitable for models on Actions ATS2825 or BES2300 chips (for example, Redmi AirDots 2, Mi True Wireless Earphones 2).

What will be required:

• 🔧 Programmer CH340G or FT232RL (~300 ₽ AliExpress).
• 💻 Firmware TWS Toolbox or Flipper Zero (for advanced users).
• 🔋 Solding iron and skills with chips (risk of damage to headphones!).

Step-by-step:

1. Disassemble the headphone case, find contacts for firmware (usually these are CLK, DAT, GND points).
2. Connect the programmer to the PC and earpiece, install drivers.
3. Download the firmware with Dual Mode support (for example, from here).
4. Launch the Flash Tool and flash the earphone, following the instructions for your model.

⚠️ Warning: Flashing will void warranty and may cause headphones to break. Once firmware is in place, one of the headphones will work as a master and the other as a slave, eliminating the out-of-synchronization, but for that, both earphones must be on the same firmware.

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Flashing is the only way to achieve synchronous sound without delay, but requires technical skills and is risky for beginners.

Method 5: Using a PC or Mac as an intermediary

If you need to connect two Xiaomi headphones to the same source temporarily (for example, to watch a movie), you can use your computer as a bridge.

• 💻 PC/laptop with Windows 10+ macOS.
• 🎧 Two Bluetooth-connected headphones.
• 🔊 The software for dubbing sound: Voicemeeter (Windows) or Soundflower (macOS).

Instructions for Windows:

1. Install Voicemeeter Banana.
2. Connect both headphones through Settings → Devices → Bluetooth.
3. In Voicemeeter, select Hardware Out 1 and Hardware Out 2, assigning each a headphone.
4. In Windows audio settings, set Voicemeeter Input as the default device.

⚠️ Note: With this connection, there may be a delay of up to 100-150 ms. For games or videos, this is critical, but for music or podcasts - tolerable.

Frequent problems and their solutions

Even after successfully synchronizing two Xiaomi headphones, there may be difficulties.

If none of the methods worked, check:

• 🔄 Compatibility of headphone models (some Xiaomi do not work in tandem with other brands).
• 📱 Bluetooth version on your smartphone (needs Bluetooth 5.0)+).
• 🔋 Headphone charge level (below 30% may fail).

FAQ: Answers to popular questions