Xiaomi wireless headphone owners often face the situation of wanting to share a sound with a friend or use two devices at the same time — for example, to listen to music in stereo mode. However, standard Bluetooth connection allows you to synchronize only one set of headphones. Fortunately, there are several ways to get around this limitation, and we will discuss each of them in detail.
In this article, you will find 5 proven methods for connecting two pairs of Xiaomi headphones to one smartphone, including official MIUI features and workarounds for models that do not support dual-audio out of the box. We will also analyze the compatibility of different generations of AirDots, Buds and FlipBuds, so you can choose the best option without the risk of losing connection or facing audio delays.
⚠️ Not all methods work with Xiaomi based on Android One (e.g. Mi). A2/A3). Before starting, check the firmware version in Settings → The phone. → Version. MIUI.
Official Dual Audio feature in MIUI (for supported models)
Starting with MIUI 12, Xiaomi has added built-in support for connecting two audio devices simultaneously via Bluetooth, a feature called Dual Audio that works on most of the brand’s flagship and mid-range smartphones released after 2020.
To activate it:
- Open Settings → Connections and Sharing → Bluetooth.
- Connect the first pair of headphones (for example, Xiaomi AirDots 3 Pro).
- Slap the gear icon next to the headphones' name.
- Select “Dual audio” (or “Connect second device” in newer versions).
- Activate the search and connect the second pair.
⚠️ Note: The function may work unstable with headphones of different models. For example, AirDots 2 and Buds 4 Pro pair give a noticeable audio delay of up to 200 ms.
Does your smartphone support you? MIUI 12+?|Is there a "Double Audio" option in Bluetooth settings?|Both pairs of headphones are charged more than 50 times%?|Headphones of one model or from one line?-->
2.Use of the SoundAssistant application (for all versions of MIUI)
If your smartphone does not support Dual Audio, you can use Xiaomi’s proprietary application, SoundAssistant, which allows you to manage audio routing and connect multiple Bluetooth devices at the same time.
Instructions:
- Download SoundAssistant from Google Play (or update if already installed).
- Open the app and go to the “Bluetooth” section.
- Connect the first pair of headphones in the standard way.
- Slip the + icon in the upper right corner and select the second pair from the list.
- Activate the “Synchronization of Sound” option.
🔹 Note: In some versions of the app, the feature is hidden. If you can't see it, upgrade SoundAssistant to the latest version or clear the cache in Settings. → Annexes → SoundAssistant → Memory.
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If the sound in the headphones is not synchronized, try disabling the AAC codec in the developer settings (Settings → About Phone → MIUI version – tap 7 times, then return to Additional → For developers → Bluetooth codec and select SBC).
3. Third-party applications (for older models)
If neither Dual Audio nor SoundAssistant works, you can use third-party utilities.
- 🎧 Bose Connect – Despite the name, supports many Xiaomi models (registration required).
- 🔊 Bluetooth Dual Audio is a simple application with a minimalist interface.
- 📱 MultiSound – allows you to connect up to 4 devices, but can cause delays.
🔹 Important: Before using third-party apps, disable battery optimization for them in Settings → Annexes → Permits → Auto-start, otherwise the connection will break.
SoundAssistant|Bose Connect|Bluetooth Dual Audio|MultiSound|Other |Not used-->
4. Connect via Bluetooth 5.0 adapter (for headphones without dual-mode support)
If your Xiaomi headphones don’t support simultaneous connection to a single source (like AirDots Youth or Mi Basic), you can use an external Bluetooth transmitter with Dual Link support.
Popular models:
| Adapter model | Dual Link Support Support | Sound delay | Price (roughly) |
|---|---|---|---|
| Baseus BTA-02 | Yes (up to 2 devices) | ~100 ms. | 1 200 ₽ |
| Avantek APA-BT500 | Yes (up to 2 devices) | ~80 ms. | 1 500 ₽ |
| 1Mii B06 Plus | Yes (up to 2 devices, aptX) | ~60 ms. | 2 500 ₽ |
🔹 How to connect:
- Insert the adapter in the 3.5 mm smartphone connector (or via USB-C adapter).
- Activate the Dual Link mode on the adapter (usually a long press on the power button).
- Connect both pairs of headphones to the adapter.
Why can't the sound work through the adapter?
5. Resetting headphone settings and re-synchronization
Sometimes the problem isn't with the smartphone, it's with the headphones themselves, and if they've been paired with other devices before, it can block the simultaneous connection, and then a complete reset will help.
Instructions for Xiaomi AirDots/Buds:
- Put both headphones in the case and close the lid.
- Press and hold the button on the case for 15 seconds (the indicator flashes red).
- Open the lid and wait until the lights start flashing white.
- Connect the headphones again through the Settings → Bluetooth.
⚠️ Attention: After resetting headphones Xiaomi Buds 3/4 Pros may require firmware updates. Check the relevance of the software in the Mi Earphones app.
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Resetting the headphones removes all previous pairings, including communication with other devices (laptop, tablet), after the procedure, they will have to be reconnected to all gadgets.
Comparison of methods: which one to choose?
To make it easier for you to determine, we have collected the key pros and cons of each method in one table:
| Method | Pluses | Cons | Suitable for |
|---|---|---|---|
| Dual Audio (MIUI) | Free, no delays. | It doesn't work on all models. | Mi 10/11, Redmi Note 10/11, POCO F3/F4 |
| SoundAssistant | Official decision, stable | Requires an update | All smartphones on MIUI |
| Party of annex | It works on old phones. | Possible lags, advertising | Redmi 8/9, Mi A2/A3 |
| Bluetooth transmitter | Minimum delay, universally | Additional expenditure | Any Xiaomi headphones |
Headphones Xiaomi AirDots Pro 2 and later (Buds 4, FlipBuds Pro) support the “Dual Device” mode, but it is designed to switch between devices (for example, a phone). ↔ laptop, not for simultaneous connection to the same source!
Frequent Mistakes and How to Avoid Them
Even with the right connection, users are facing problems.
- 🔇 The sound only goes into one headphone. → Check the audio balance in Settings → Sound. → Balance L/R.
- 🔄 Headphones are constantly switched off → Turn off the adaptive Bluetooth battery in Settings → Battery → Optimization.
- ⏱️ Sound delay more than 300 ms → Switch the codec to SBC (see the advice above).
- 🔌 No second pair is visible on the device list. → Reboot your smartphone and headphones.
🔹 Tip: If you use Xiaomi Buds 3 Pro or newer, update the firmware through the Mi Earphones app – in the latest versions, multi-connection support is improved.