Users of the Xiaomi ecosystem often wonder if it is possible to use two pairs of wireless headsets simultaneously to listen to music or watch movies. This is especially true on trips when you want to share audio content with a friend or partner without having to switch devices. Fortunately, modern Bluetooth technologies allow you to implement a Dual Audio scenario, albeit with certain limitations depending on the smartphone model and the operating system version.
There are two main use cases: connecting two headphones to a single sound source (smartphone) or connecting one headset to two different devices. In the first case, you get the ability to broadcast sound to two receivers, in the second, control playback from two gadgets. It is critical to understand that the simultaneous operation of two pairs of headphones from one phone is supported not by all Xiaomi models, but mainly by the flagship series with Qualcomm chips of recent generations.
Before you start setting up, you need to make sure your hardware is compatible and the software is up-to-date.The process may vary depending on whether you use the original Mi True Wireless or third-party Bluetooth headphones.Let's take a look at all the available techniques and technical nuances so you can choose the right option for your situation.
Technical limitations of the Dual Audio mode on Xiaomi
The feature of connecting two Bluetooth audio devices to the same smartphone is based on Bluetooth 5.0 and above, as well as support for an A2DP profile in multiple connection mode. On Xiaomi, Redmi and Poco smartphones, this feature is often hidden in the engineering menu or is only available through third-party applications, unless the manufacturer has added it to the standard shell MIUI or HyperOS.
The main obstacle is channel bandwidth: Transmitting high-quality audio to two devices requires more CPU and radio resources. If your smartphone is equipped with an old chipset, it may not be able to codify two data streams, leading to audio desynchronization or permanent communication breaks.
It’s also worth considering that even with a successful connection, there may be increased latency, especially when watching videos or in games where audio may lag behind video on one or both devices.
⚠️ Warning: Attempting to force dual audio on unsupported hardware can lead to overheating of the Bluetooth module and rapid discharge of the smartphone battery.
To test your device’s capabilities, you can use specialized utilities that will show the Bluetooth version and supported profiles, but the easiest way to try pairing is with the standard methods described below.
Method 1: Using MIUI and HyperOS standard settings
In the latest versions of the MIUI 14 and HyperOS shells, Xiaomi engineers have begun to implement native support for multiple audio output. To check for this feature, you need to connect the first pair of headphones in the usual way through the Bluetooth menu.
After successfully pairing and playing the sound, go to Bluetooth settings. Click on the arrow or gear icon next to the name of the connected device. In the menu that opens, find an item that may be called “Double Audio”, “Connect a second device” or “Dual Device”.
If you have one, the system will ask you to turn on a second pair of headphones, put them in pairing mode and select from the list of available devices on the smartphone screen, and then the sound should be broadcast to both headsets simultaneously.
- 🎧 Make sure both devices are in pairing mode (flashing indicators).
- 📱 Keep your smartphones and headphones at a distance of no more. 1-2 yards during adjustment.
- 🔊 Check the volume level on each device separately, as they can be adjusted independently.
In some cases, even if the menu doesn't offer an explicit switch, the system may automatically suggest connecting a second device when trying to play media.This depends on the specific implementation of the Bluetooth stack in your phone model.
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If the standard menu does not offer to connect a second device, try to start playing music before connecting the second pair of headphones - this sometimes activates a hidden trigger system.
Method 2: Engineering menu and hidden settings
For advanced users whose devices do not have explicit Dual Audio support in the interface, there is a way to activate the function through an engineering menu, which requires caution, since changing the wrong parameters can affect the stability of the radio module.
To enter the engineering menu, open the Phone app and dial the combination ##6484## or #4636##. Depending on the model and the firmware region, the codes may differ. If the code does not work, it is possible that access to the engineering menu is blocked by the operator or manufacturer.
You can find a Bluetooth-related section in the menu that opens, and look for items with names like "Bluetooth Test," "A2DP Sink," or "Dual Audio Mode," and activating the appropriate switch can enable support for a second audio stream.
The path can be as follows: Component Test -> Bluetooth -> A2DP Source Test -> Enable Dual AudioIf the sound does not appear on the second device after the reboot, then the hardware of your smartphone does not physically support simultaneous transmission of two A2DP streams.
⚠️ Warning: Changes to the engineering menu are made at your own risk. Do not change the settings you are not sure about, so as not to disrupt the wireless modules.
What to do if the engineering menu is not opened?
Method 3: Third-party applications for sound distribution
If system methods don’t work, third-party apps from the Google Play Market come to the rescue, using their own algorithms to duplicate audio streams, and one of the most popular solutions is the Sound Assistant app (often associated with Samsung, but there are analogues) or specialized utilities like Audio Share.
The principle of these applications is to create a virtual audio device that intercepts the system sound and redirects it to several connected Bluetooth addresses, which creates an additional burden on the processor.
For the use of the method:
- Install the selected application from a reliable source.
- Provide the necessary permissions to access the microphone and Bluetooth.
- Connect the first pair of headphones, then launch the app and connect the second.
It is worth noting that free versions of such programs often have restrictions on the time of operation or sound quality (for example, only mono-mode), and the latency of sound when using third-party software is usually higher than with native support.
☑️ Checking before installing applications
Dual Device (One Earbud Each)
There's another scenario that's often confused with Dual Audio: It's a mode where you take one headphone from the left case and one from the right, plugging them into different smartphones. Or when one headphone works as an independent device. Many modern Xiaomi Mi True Wireless Earbuds models support TWS Independent mode.
In this case, each headphone acts as a separate Bluetooth device with its own headphone. MAC-You can connect the left earbud to your phone and the right earbud to a friend's phone, and the sound will go different (or the same if you run the tracks simultaneously).
To activate this mode, you usually need:
- 🔘 Remove both earphones from the case.
- 📴 Turn off Bluetooth on one of your smartphones.
- 👆 Touch panels on both headphones simultaneously on 5-7 seconds before resetting the pairing mode.
After that, the headphones will stop seeing each other and will look for separate devices to pair, which is ideal for co-watching videos when you need to share audio channels, but not suitable for a party where the sound should be the same for everyone.
Comparison of connection methods
For the convenience of choosing the best way to solve your problem, we have prepared a summary table comparing the available methods by key parameters.
| Method | Sound quality | Delay (Latency) | Difficulty setting up |
|---|---|---|---|
| Dual Audio staffing | High (Stereo) | Low. | Low. |
| Engineering menu | High. | Medium | Tall. |
| Third-party Apps | Medium (often Mono) | Tall. | Medium |
| Dual Device (TWS) | High. | Low. | Medium |
As you can see from the table, native support is the best option, but it's not available to everyone. The engineering menu is good, but it requires technical knowledge. Third-party applications are a compromise solution when other methods are not available.
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The choice of method depends on the hardware support of your smartphone: if there is no item in the Bluetooth settings for the second device, you will most likely have to use third-party software or accept restrictions.
Solution and troubleshooting
Even with the right setup, users can run into problems, the most common being desynchronization of sound, where the music is playing on the left earphone and the right earphone is a fraction of a second behind, and this is treated by reconnecting or rebooting the Bluetooth module through flight mode.
Another problem is that you can't control the volume of the second device, and in Dual Audio mode, the volume is often synchronized with the main device, and you can't adjust it separately on the second headphone, and that's a data protocol limitation.
If the sound is interrupted or cracked:
- 📶 Make sure there are no thick walls or sources of interference between devices (Wi-Fi routers, microwaves, etc).
- 🔋 Check the battery power in the headphones – at low charge, the transmitter power can decrease.
- 📱 Close background apps on your smartphone that consume a lot of network resources.
It’s also worth checking if Mono-audio is included in Android’s special features, which sometimes conflict with the two-device audio distribution algorithms.
⚠️ If after all the manipulations sound works only in one headphone from the pair, perhaps the problem is in the desynchronization of the pair. TWS-Perform a full reset of the headphones according to the manufacturer's instructions.