Modern Xiaomi smartphones running on the shell of MIUI or HyperOS provide users with extensive multimedia management. One of the most popular features for sharing video or listening to music is the ability to output sound to two devices. Xiaomi owners often wonder whether this option can be used without buying additional hardware. Fortunately, built-in Android features and proprietary add-ons make it quite simple to implement.
Bluetooth technology has changed dramatically in modern gadgets, and while the protocol used to allow only one output device to stream audio, it is now different. Xiaomi is actively implementing Bluetooth Audio Sharing, making the process of synchronizing two pairs of headsets accessible to a wide range of users.
In this guide, we will take a look at all the available methods, from standard system tools to using third-party utilities, learn how to circumvent the limitations of older versions of Android and which codecs will provide the best sound quality in dual broadcast.
Compatibility check and equipment preparation
Before you start setting up, you need to make sure that your hardware is technically capable of supporting dual audio. Not all Xiaomi smartphones have the same set of features, even if they belong to the same price segment.
The main requirement is Bluetooth version 5.0 and higher, although some implementations work on 4.2 using proprietary codecs. You should check the specifications of your device on the official website or in the system settings. It is also important that the headphones themselves maintain pairing mode and are not busy connecting to other gadgets.
To start the process, make sure that both output devices are charged and in a standby pairing mode. Often users forget to put the headsets into a pairing mode, which makes the phone not see the second device after connecting the first one.
⚠️ Warning: If one of the headphones is already connected to another phone or tablet, Xiaomi may not see it when scanning.Switch off Bluetooth on all foreign devices nearby.
There is also an operating system version dependency: newer versions of MIUI 13, 14 and HyperOS have improved Bluetooth connection management algorithms, which reduces the likelihood of audio being out of sync between channels.
The standard method via the Bluetooth menu in MIUI and HyperOS
The easiest and most reliable way to do this without additional software is to use the built-in shell functionality. The latest Xiaomi firmware has native support for connecting multiple audio devices, which works the most stable and minimizes audio delays.
To start, open your Bluetooth settings and pair with the first pair of headphones. Make sure the sound is played correctly. After that, without turning off the first device, put the second pair into detection mode and click on the search button for new devices in the smartphone menu.
When the second device appears on the list of available, click on it to connect. In most cases, the system will automatically redistribute the audio stream. If this does not happen, go to advanced Bluetooth settings.
☑️ Connection check
In some cases, you need to manually activate the function through an engineering menu or a special developer settings, but the standard Android Audio algorithm often copes automatically.
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If the sound went to only one headset, try to start playing the media file again after connecting the second device.
Use of Dual Audio in Developer Settings
If a standard connection fails, it’s worth looking at hidden system settings. MIUI shells often have a feature that allows you to force the second output channel, especially for mid-range models, where marketing restrictions can hide the real potential of iron.
To access these settings, activate the developer mode. Go to Settings → About Phone and quickly click on the build number seven times (MIUI Version). Once you have become a developer, go back to the main settings menu.
Now look for additional settings → For developers. This list should look for options related to Bluetooth. We are interested in settings that regulate the number of connected devices or version of Bluetooth AVRCP.
Path to setup: Additional settings -> Developers -> Maximum connected Bluetooth devicesChange the value to "2 devices" or "3 devices" if available. It's also worth experimenting with the AVRCP profile version by setting a value of 1.5 or 1.6, which can improve compatibility with older headphone models.
⚠️ Attention: Changing the settings in the developer menu can affect the stability of other Bluetooth gadgets, such as smartwatches or fitness bracelets.
When you change the settings, be sure to restart your smartphone, which is a critical step, because Bluetooth drivers are only initialized when you start the system, and without rebooting, the new connection limits may not apply.
Application of third-party applications for broadcasting sound
When system constraints are insurmountable, specialized applications from Google Play come to the rescue, creating a virtual audio channel and forcibly duplicating the stream to all available Bluetooth outputs, a solution that is universal and works on most Xiaomi Redmi and Poco models.
One popular solution is the AudioRelay or Sound Assistant app (for the Samsung ecosystem, but it works on other Androids as well), but for pure duplication on two devices, utilities like Bluetooth Audio Player or specific mods are often used.
- 📱 Sound Assistant: Allows detailed audio management, but requires additional permissions through the ADB Full functionality on non-certified devices.
- 🎧 Bluetooth Audio Player: A player that can send sound to multiple connected devices at once, bypassing the standard Android mixer.
- 🔊 Lesser AudioSwitch: A utility for forced switching and combining sound outputs, including simultaneous operation of speakers and headphones.
The use of third-party software has its disadvantages, primarily because it is more energy-efficient, because the processor processes the audio stream, and there may be a dissynchronization of sound between two pairs of headphones, especially if they are different models.
Why is there a desynchronization?
Problems with codecs and quality of sound transmission
The sound quality of connecting two pairs of headphones depends on the codec used. The standard SBC codec is the most compatible, but provides the least quality and maximum latency. For music, it is preferable to use aptX or LDAC if your headphones and smartphone support them.
The problem is that when you connect a second device, the system often automatically switches to the SBC base codec to ensure connection stability, which is due to the limited channel bandwidth when broadcasting to two receivers at the same time.
You can check and change the codec from the developer menu. Find the Bluetooth codec and try to select the higher bitrate option. However, if one of the devices does not support the selected codec, the sound may disappear completely or crack.
| Codec | Bitreit | Delay. | Compatible with Dual Audio |
|---|---|---|---|
| SBC | up to 328 kbps | Tall. | Excellent (100%) |
| aptX | up to 352 kbps | Medium | Good. |
| aptX HD | up to 576 kbps | Medium | Medium |
| LDAC | up to 990 kbps | Low. | Low (frequently reset) |
If you notice a deterioration in sound quality after connecting the second headset, most likely, the system has switched to SBC. In this case, you should accept the loss of quality for the sake of sharing, or use a wired splitter if the quality is critical.
Solving Frequent Problems and Disconnections
Unstable connectivity is the most common complaint users have when using two Bluetooth devices.The signal may be interrupted, or one of the devices may spontaneously shut down.This is often due to interference in the 2.4 GHz band, where Wi-Fi routers and microwave ovens operate.
Try turning off your smartphone's Wi-Fi while you're listening to music, or switching to a 5GHz network if the router supports that frequency. Also, keep your phone away from interference sources. In some cases, clearing your Bluetooth cache helps.
To do this, go to Settings → Applications → All apps, find in the list “Bluetooth”, click “Memory” and select “Clean”. This will reset all temporary files and protocol settings, which often resolves software conflicts.
⚠️ Note: Clearing Bluetooth data may require re-pairing all previously connected devices (watches, bracelets, automotive systems).
Another reason could be energy saving: Xiaomi's system aggressively restricts background activity, go to the battery settings and set "No Limits" for the Bluetooth system process (if available) or the player you're using.
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The stability of Dual Audio on Xiaomi depends on the absence of interference in the air and energy saving settings, not just on the Bluetooth version.