You want to listen to music or watch a movie with a friend, but you only have one Xiaomi smartphone? Connecting two pairs of headphones to the same device is a challenge many users face. Unfortunately, standard Bluetooth protocol does not support simultaneous audio playback on multiple audio devices without additional tricks. However, there are several working ways to get around this limitation, from built-in MIUI features to third-party apps and adapters.
In this article, we will discuss all the current methods, including dual audio mode (if available on your model), the use of Bluetooth transmitters, applications like SoundAssistant and even physical splitters for wired headphones. We will pay special attention to the nuances of working on different versions of MIUI (from 12 to 14) and popular smartphone models – Redmi Note 12, Xiaomi 13, POCO X5 and others.
Before you start, check the version of MIUI on your device: go to Settings → About Phone → MIUI version. This will help you choose the best way to connect.
1.Verify Dual Audio support in MIUI
Some Xiaomi models based on MIUI 12.5+ support the built-in Dual Audio (or "Dual Audio Out") feature, which allows you to connect two pairs of Bluetooth headphones at the same time.
To check for her presence:
- 📱 Open the Settings. → Connections and sharing → Bluetooth.
- 🔍 Connect the first pair of headphones, then try connecting the second.
- 🎧 If you have dual audio output or dual audio output in the Bluetooth menu, activate it.
As of 2026, Dual Audio is officially confirmed for the following models: Xiaomi 13 Pro, Xiaomi 12T, Redmi K60 and POCO F5 on MIUI 14. On older devices (for example, Redmi Note 10), this option may be missing or unstable.
⚠️ Note: When using Dual Audio, audio delays are possible (up to the end of the day). 200 This is due to the limitations of the Bluetooth protocol. 5.0/5.2.
2.Use of Bluetooth transmitters
If your Xiaomi doesn’t support Dual Audio, you can use an external Bluetooth transmitter with a 2-in-1 function. These devices connect to your smartphone via a 3.5 mm audio jack or USB-C and relay the sound to two pairs of headphones at the same time.
Popular models of transmitters:
- 🎵 Avantek APTX Low Latency – Supports the aptX codec LL minimum delay.
- 🔊 Mpow BH129 — budget version with a 3.5 mm connector.
- 📱 1Mii B06 Plus - it works through USB-C Compatible with Xiaomi without audiojack.
Instructions for connection:
- Connect the transmitter to the smartphone through the appropriate connector.
- Activate the Dual Link mode on the transmitter (usually the power button is held for 3-5 seconds).
- Connect both pairs of headphones to the transmitter manually.
| Model transmitter | Type of connection | Max, delay. | Price (2026) |
|---|---|---|---|
| Avantek APTX LL | 3.5 mm/USB-C | 40ms. | ~3 500 ₽ |
| Mpow BH129 | 3.5 mm | 100 ms. | ~1 800 ₽ |
| 1Mii B06 Plus | USB-C | 60 ms. | ~4 200 ₽ |
⚠️ Note: When using transmitters through USB-C Xiaomi may need to disable the option “Charge through” USB" Developer Settings to Avoid Conflicts.
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If your smartphone does not recognize USB-C transmitter, try to use OTG-externally powered adapter, which solves the problem of power shortage for the device.
3. Sound duplication applications
If hardware solutions don't work, you can use specialized applications that emulate the Dual Audio function software, although they have stability limitations.
Top.-3 apps:
- 🎧 SoundAssistant (from Samsung, but works on the same platform) MIUI) — It allows you to direct sound to two Bluetooth devices.
- 🔊 Bluetooth Dual Audio is a simple interface, but requires root rights on some models.
- 📱 Audio Relay – relays sound over a local network (suitable for headphones with support for Wi-Fi).
The following is a step-by-step guide for SoundAssistant:
Download APK from the official website (version 2.1.0+)
Enable the option of "Double audio" in the settings of the application
Connect the first pair of headphones via standard Bluetooth
Select the second pair in the SoundAssistant menu → “Additional device”
Reboot Bluetooth on your smartphone (turn off/on)
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Important: MIUI 14 may require you to turn off battery optimization for the application, otherwise the sound will be interrupted. You can do this in Settings → Applications → Application Management → SoundAssistant → Battery → No restrictions.
Why can applications not work?
4. Connection via splitter (for wired headphones)
If you use a 3.5mm wired headphone, the easiest way is to buy an audio splitter, which duplicates the two outputs, allowing you to connect two pairs of headphones to the same socket.
Advantages of the method:
- ⚡ No sound delays (unlike Bluetooth).
- 💰 Minimum cost (from 200) ₽).
- 🔌 It works on any Xiaomi model, even without Bluetooth.
Disadvantages:
- 🎧 Sound quality can be degraded by using cheap splitters.
- 🔊 There is no way to adjust the volume for each pair separately.
Recommended models of splitters:
- 🔌 UGREEN 30338 — maintains high quality sound (24-bit/96kHz).
- 🎵 Belkin RockStar - a reliable version with a metal body.
⚠️ Note: Xiaomi models without audiojack (for example, Xiaomi 12) will require USB-C → 3.5 mm adapter + This can cause loss of sound quality due to double signal conversion.
5 Features on different versions of MIUI
Dual Audio functionality and application compatibility are highly dependent on the firmware version, and below is a comparison table for popular MIUI versions:
| MIUI version | Dual Audio support | Work by SoundAsistant | Limitations |
|---|---|---|---|
| MIUI 12.0–12.5 | ❌ No (except for Xiaomi 11 Ultra) | ✅ Yes (with manual settings) | Frequent communication breakdowns |
| MIUI 13 | ⚠️ Partially (on flagships) | ✅ Yes. | Sound delay up to 150 ms |
| MIUI 14 | ✅ Yes, on most models) | ✅ Yes. | Bluetooth stack update required |
On MIUI 14, Dual Audio activation sometimes requires:
- Update the Bluetooth stack through Settings → About Phone → System Update.
- Reset network settings: Settings → Connections → Network reset.
- Enable Developer Mode and activate the Bluetooth Debugging option.
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Dual Audio is more stable on MIUI 14, but both devices must support Bluetooth 5.2+.
6. Alternative methods: Wi-Fi and local area network
If Bluetooth solutions don't work, you can relay audio over Wi-Fi using applications like Audio Relay or SoundWire.
- 🎧 Headphones with Wi-Fi support (for example, Sony) WH-1000XM5).
- 💻 Connect to a computer or other smartphone as a receiver.
Instructions for Audio Relay:
- Install the application on both devices (source and receiver).
- Connect both devices to the same Wi-Fi network.
- At the source (your Xiaomi) select Transmit Audio.
- On the receiver (second smartphone/tablet), select Receive Audio.
Advantages of the method:
- 🎵 There is no limit on the number of connected devices.
- 🔊 Minimum delays (up to 50 ms with good signal).
Disadvantages:
- 📶 Requires a stable Wi-Fi connection.
- 🔋 Increased battery consumption.
7. Frequent problems and their solutions
When connecting two pairs of headphones, Xiaomi users often encounter typical errors.
Problem 1: The second pair of headphones connects, but the sound goes only to the first.
- 🔄 Reboot Bluetooth: Turn it off for 30 seconds, then turn it on again.
- 📱 Check if Media Audio is only on for one device in Bluetooth settings.
Problem 2: The sound is interrupted or delayed.
- 🔋 Charge headphones to 100% – low charge can cause crashes.
- 📡 Reduce the distance between your smartphone and headphones (optimally up to 1 meter).
- 🛠️ Update the firmware of the headphones through the branded app (for example, Mi Headphones for Xiaomi devices).
Problem 3: Dual Audio applications are not working.
- 🔒 Check the permissions: Settings → Annexes → Permits → SoundAssistant → Microphone and Bluetooth.
- 📲 Install an older version of the application (e.g. SoundAssistant 1.5.0 instead of 2.1.0).