Modern smartphone users often face the desire to share an audio stream with a friend, partner or colleague without resorting to using external speakers in a public place. Bluetooth technology has long limited the transmission of sound to only one output device, but modern protocols and shells MIUI or HyperOS allow you to bypass this limitation. Connecting two pairs of wireless headphones Xiaomi opens up new opportunities for sharing movies, listening to music or games without having to pass the gadget from hand to hand.
This feature depends not only on the headphone model, but also on the version of your smartphone’s operating system, as well as on codec support. Owners of the Xiaomi ecosystem have the advantage of deep integration of accessories with the shell, which makes it easier to pair. However, even if you have devices of different generations or models, there are several proven methods of organizing broadcasts on two channels simultaneously.
In this article, we will take a closer look at the technical aspects of Bluetooth multi-connection, how to activate hidden functions, which models support simultaneous operation, and how to avoid typical audio desynchronization issues. Your smartphone’s Dual Audio capability is the first step to sharing media content comfortably.
Technical requirements and compatibility of devices
Before you start setting up, you need to make sure that your hardware is physically capable of supporting audio transfer to two devices. Bluetooth standard, since version 4.0, theoretically allows for the connection of multiple peripherals, but the actual implementation depends on the chip manufacturer and the software. Xiaomi smartphones running on Android 10 and higher with a MIUI shell 12 or later, have built-in support for this feature, but it can be hidden or require activation.
The key is that you can support the AptX Adaptive codec, or at least AAC, with both earphones to minimize latency. If one of the headphones uses an old SBC profile and the other is a modern codec, the smartphone can force you to switch to low quality for both devices. It's also important to consider battery power: simultaneous broadcasting on two channels consumes the power of the Bluetooth module more than usual.
⚠️ Note: Using old headphone models (released before 2018) in pair with new ones can lead to significant dissynchronization of audio and video when watching movies.
For stable operation, it is recommended that both headphones be of the same brand, ideally Xiaomi or Redmi models. This ensures better compatibility of handshake protocols when connecting. Check the specifications of your smartphone on the manufacturer's website or in the Settings menu → About phone → All options to make sure that Bluetooth 5.0 and higher support is available.
Preparation of the smartphone and software update
The foundation of successful connectivity is up-to-date software. Xiaomi engineers regularly release patches that improve the stability of wireless connections. Before trying to pair two pairs of headphones, it is strongly recommended to check for system updates. This can be done by going to the Settings menu → About Phone → MIUI version and clicking on the system logo.
In addition to the OS update, you should pay attention to the firmware of the headphones themselves. Many TWS models from Xiaomi, such as AirDots or Buds, receive updates through the Mi Earbuds app or Xiaomi Earbuds. Outdated firmware headset can contain bugs that prevent the correct identification of the second device on the network.
☑️ Preparation for connection
It’s also worth clearing the list of previously paired devices if there are too many of them.The smartphone may try to automatically connect to forgotten gadgets, creating an address conflict.Go to Bluetooth settings, find unnecessary devices, and click Forget the device or gear icon to delete the profile.
Use of the built-in Dual Audio function on MIUI
The easiest and most reliable way to connect two Xiaomi wireless headphones is to use the native shell function. In the latest versions of MIUI and HyperOS, this process is as automated as possible. First, connect the first pair of headphones in the standard way: open the case, press the pairing button and select the device from the list of available ones.
Once you successfully connect the first pair without closing the Bluetooth menu, prepare the second headphones for pairing. Usually, you need to press a button on the case or select "Connect a new device" from the phone menu. The system itself will suggest adding a second audio output if it detects support for the function. In some versions of the interface, when you connect the second device, a pop-up asks about playback mode.
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If the second device doesn’t appear on the list, try connecting to it first from another smartphone and then looking for it again from the main one – this will update the Bluetooth address cache.
Volume and balance control is done through a standard interface. When you play audio in the notification curtain or lock screen, an additional switch or output selection menu may appear. If you use the Mi Music app, there is also a separate partition to manage connected devices.
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The built-in Dual Audio feature in MIUI provides the least latency and automatic volume synchronization on both devices.
Alternative methods through third-party applications
When regular tools don’t work or your smartphone doesn’t support system-level multiple connectivity, specialized apps come to the rescue. One of the most popular solutions is Samsung’s Sound Assistant app, which can be installed on any Android smartphone, including Xiaomi, which allows you to create virtual audio channels.
Another option is to use applications to stream audio over Wi-Fi and then capture Bluetooth, but this can increase latency. Applications like Audio Share or Bluetooth Audio Player often have their own codecs and buffering algorithms, which helps smooth out the out-of-synchronization, and installing such programs requires permission to access the microphone and system.
When using third-party software, it is important to monitor energy consumption, which is in the background and can actively use the processor to transcode the audio stream on the fly, which can lead to heating of the smartphone with prolonged use.
| Annex | Type of connection | Delay. | Difficulty |
|---|---|---|---|
| MIUI Dual Audio | Systemic | Low. | Minimum |
| Sound Assistant | Away. | Medium | Medium |
| Bluetooth Audio Player | Away. | Tall. | Tall. |
| Lesser AudioSwitch | Utility. | Depends on the OS. | Medium |
Setup for devices of different brands
Connecting two Xiaomi headphones to the same phone is the perfect scenario, but what if you and your friend have different models or even different brands? Android allows you to connect heterogeneous devices, but here the limitations of codecs come into force. The smartphone will choose the "lowest common denominator" - a codec that supports both devices, often it's SBC.
To minimize the problems of mixing brands (e.g. Xiaomi and Huawei), it is recommended to manually set the same Bluetooth profile in the engineering menu if you have root rights. The path to settings is usually hidden: Settings → About phone → 7 times click on the build number → Advanced settings → Engineering menu. Here you can try to force the A2DP profile with the same bitrate.
⚠️ Warning: Making changes to the engineering menu without understanding the consequences can lead to unstable Bluetooth module operation or complete shutdown of the sound.
If automatic synchronization fails, try to play music first on one device, then switch output to the second without pause, and then activate both. This trick sometimes helps the audio buffer correctly distribute data packets between different recipients.
Solving problems with desynchronization and sound
The most common problem with connecting two pairs of headphones is desynchronization, where the sound in one ear or one headset lags behind the other by a fraction of a second. This is especially noticeable when watching videos. To combat this, try turning off Absolute Volume from the developer menu, which will unleash the volume control of the system and headphones, which sometimes stabilizes the flow.
It is also worth experimenting with distance. Bluetooth has a limited range, and with two active receivers, the signal can interfere. Try to keep both users in close proximity to the smartphone (within a radius of 2-3 meters). Obstacles in the form of a human body or metal structures can degrade the signal for one of the devices.
Secret reset of Bluetooth stack
In some cases, clearing the Bluetooth cache helps. Go to Settings → Apps → Show all apps → (three dots) → Show system processes → Bluetooth. Choose Clear the cache and Clear the data. After that, you will need to re-sanctuate all devices, but this often solves the “junk” problems in connection profiles.
Features of working with high-resolution codecs
Audiophiles may wonder whether LDAC or aptX HD codecs can be supported in dual headphone mode.The reality is that the bandwidth of the Bluetooth channel is limited. When two devices are connected, the smartphone cannot physically transmit two streams in maximum quality at the same time without losing stability.
The system will automatically switch to more compressed formats to ensure continuity of flow for both listeners. If you use streaming services like Tidal or Apple Music, make sure that the app settings do not have a quality limit that may conflict with the Bluetooth streaming capabilities at the moment.
Understanding these limitations will help avoid frustration, and for casual listening, the difference in quality will be subtle, but for critical listening, it is better to use wired branching or specialized transmitters.
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When connecting two headphones, the system’s priority is the stability of the connection, not the maximum quality of the codec.