Modern smartphones based on Android offer users unprecedented multimedia capabilities, allowing you to share sound without unnecessary wires. You are no longer limited to one output device: if you wish, you can connect two sets of headphones to one phone and listen to music or watch a movie with a friend. This function is especially relevant for owners of accessories from the brand Xiaomiwho often use the same chipsets for stable communication.
The technical implementation of this task depends on the version of the operating system and the hardware capabilities of the Bluetooth module of your gadget. In the latest versions MIUI i HyperOS algorithms for working with peripherals have been significantly improved, which minimizes delays and desynchronization. However, in order to enjoy high-quality stereo sound on two pairs of ears, you need to correctly configure the connection parameters and make sure that the function is supported Dual Audio.
In this article we will look in detail at how to turn your smartphone into a full-fledged audio station for two. We will look at both standard system tools and specific settings for devices Xiaomi, and also answer questions about the compatibility of different models and possible problems with signal stability.
Technical requirements and device compatibility
Before starting setup, it is critical to make sure that your equipment is physically capable of supporting simultaneous transmission of an audio stream to two receivers. Technology Bluetooth 5.0 and higher is a prerequisite for comfortable use of the function without noticeable delays. Older versions of the protocol may be unstable or may not support multi-connection at all.
Smartphones Xiaomi mid-range and flagship segments released after 2019 are usually equipped with the necessary modules. However, budget models may have limitations at the driver or firmware level. It is also worth considering that the headphones themselves must support the A2DP (Advanced Audio Distribution Profile) to transmit high-quality sound.
⚠️ Attention: Connecting two devices increases the load on the Bluetooth module, which can lead to a reduction in the battery life of the smartphone by 15-20%.
If you have older models headphones with Bluetooth 4.2 or lower, the system may refuse to connect the second pair or will constantly disconnect the connection. The table below shows the approximate compatibility of popular device series:
| Smartphone series | Bluetooth version | Dual Audio support | Connection stability |
|---|---|---|---|
| Xiaomi 13 / 14 Series | 5.3 | Full | High |
| Redmi Note 12 / 13 | 5.2 / 5.3 | Full | Medium |
| Poco X5 / F5 | 5.2 | Full | High |
| Redmi 9 / 10 (budget) | 5.0 | Partial | Low |
You can check the exact Bluetooth version in the device characteristics on the official website or in the menu Settings → About phone → All characteristics. If the version is lower than 5.0, the chances of successful implementation of the idea tend to zero.
Activation of the Dual Audio function in Android settings
Starting with version Android 10, the function of simultaneously connecting two audio devices are built directly into the core of the system, but are often hidden from the user's eyes. In shells MIUI i HyperOS activation occurs through the standard Bluetooth menu, but requires a certain sequence of actions.
First you need to put both sets of headphones Xiaomi into pairing mode. Typically, this requires holding down the control button or power button on the case until the indicator starts flashing white or blue. Make sure that none of the devices is connected to other gadgets at this moment.
- 📱 Open
Settingsand go to the section Bluetooth. - 🎧 Pair with the first pair of headphones and wait for the status “Connected.”
- 🔄 Without disconnecting the first device, find the second pair in the list of available ones and click on it to connect.
In most cases, the system will automatically recognize the second device as an additional audio output. If this does not happen, click on the gear icon next to the name of the connected device and look for a switch "Audio for two devices" or a similar option.
Sometimes a reboot of the Bluetooth stack is required. To do this, you can use the engineering menu or simply turn flight mode on and off. This will reset the connection cache and allow the system to re-detect available profiles.
Using the Xiaomi Earbuds application for synchronization
For owners of original brand accessories, such as Xiaomi Buds 3 Pro or Redmi Buds 4, the proprietary application becomes a real salvation. It allows you to manage codec settings and connection priority, which is critical when working with two pairs.
Download the application Xiaomi Earbuds from the store Google Play or GetApps. After installation, launch it and add your first device. An option is often hidden in the control menu "Multi-connection", which optimizes the operation of the chip for transmitting a signal to several points.
If the application does not see the second pair of headphones, try connecting it manually through the Bluetooth system settings, and then update the list of devices in the application.
It is important to monitor the firmware version of the headphones themselves. Manufacturers regularly release updates that improve connection stability and fix bugs with sound desynchronization. Go to the device settings inside the application and check for updates firmware.
⚠️ Attention: The interface of the Xiaomi Earbuds application may differ depending on the headphone model and the firmware region of the smartphone.
If the standard application does not give the desired result, you can try third-party utilities for managing Bluetooth, such as Bluetooth Connect. They allow you to forcefully enable profiles that the system considers incompatible by default.
Setting codecs and sound quality
The sound quality when connecting two pairs of headphones directly depends on the selected one audio codec. By default, the system may use the basic SBC codec, which provides stability but not the best quality. For headphones Xiaomi more advanced options are often available, such as AAC or LDAC.
To change the settings, activate developer mode on your smartphone. To do this, go to Settings → About phone and quickly click on the item "MIUI Version" (or "OS Version") about 7 times until the activation message appears.
Settings → Additional settings → For developers → Bluetooth audio codecIn the menu that opens, select the codec AAC or aptX Adaptiveif your headphones support them. Remember that using high bitrate codecs (for example, LDAC) when connecting two devices can lead to video stuttering due to lack of channel bandwidth.
What to do if the sound is wheezing?
Try switching the codec to SBC. This will reduce the quality, but will significantly increase the stability of the connection when two devices are loaded.
You can also find a parameter in the developers menu "Disable absolute volume level". Enabling it sometimes helps synchronize the volume level on both devices if one plays quieter than the other.
Solving problems with desync and delays
One of the most common problems when using two pairs of headphones is desync: sound in one device lags behind the other by a fraction of a second. This is especially noticeable when watching videos or playing games. The reason lies in the peculiarities of data buffering.
Try to disconnect and reconnect both devices, changing the order. Sometimes the system designates one device as the “master” and the other as the “slave,” and changing the roles may solve the problem. Clearing the Bluetooth cache also helps: go to Settings → Applications → Show all → Bluetooth → Storage → Clear cache.
- 🔋 Make sure that the charge of both devices is above 30% - when the charge is low, the transmitter power decreases.
- 📶 Move your smartphone away from sources of interference: Wi-Fi routers, microwaves and other Bluetooth gadgets.
- 🔄 Reboot your smartphone after changing the codec settings.
☑️ Diagnostics of sound delay
If all else fails, perhaps the hardware limitations of the smartphone do not allow processing two high-quality streams simultaneously. In this case, reducing the quality in the developer settings is the only way out.
Alternative methods and third-party applications
If the built-in Android functions do not work correctly, you can turn to third-party software. Application Sound Assistant from Samsung (available for installation on many Android smartphones) or analogs like Audio Relayer allow you to flexibly manage audio streams.
These utilities create a virtual audio driver that redirects sound to several physical devices. However, it is worth understanding that such a solution increases latency and battery consumption. Use them only in extreme cases.
Third-party applications are a compromise: they provide functionality where the system cannot cope, but at the cost of stability and power consumption.
There is also a method of using NFC tags for quickly rebinding devices, but it requires special tags and skills in programming automations through applications like Tasker. This is a solution for advanced users who want to create a “one-touch” scenario.
Frequently asked questions (FAQ)
Is it possible to connect three headphones at the same time?
It is impossible to connect three or more devices to play sound at the same time using standard Android tools. The bandwidth of the Bluetooth chip and OS software limitations are only sufficient for two A2DP streams.
Why doesn’t the second device connect?
Most likely, your smartphone does not support the Dual Audio function in hardware or the Bluetooth version is too old. Also check if the connection is occupied by the first device in Mono or Hands-free mode, which is blocking the second channel.
Does this affect the quality of calls?
Yes, when there is an incoming call, the system usually switches audio to one device (most often the one that was connected first or has the best signal). Talking through two sets of headphones at the same time is technically difficult and often impossible due to the limitations of the HSP/HFP profile.
Does this work with wired headphones via an adapter?
No, the Dual Audio function is intended exclusively for wireless connection. Connecting wired headphones via USB-C or mini-Jack disables Bluetooth audio or works as a separate channel that cannot be combined with wireless using standard methods.
Do you need Root access for this function?
No, on modern versions of Android (10 and above) root access is not required. All necessary functions are built into the system, although access to some advanced codec settings may require activation of developer mode.