How to connect two headphones Xiaomi at the same time: all methods + instructions

Connecting two pairs of Xiaomi headphones to the same device at once is a challenge many users face: Whether you want to share music with a friend, use two devices for improved sound, or just test a new headset without turning off the old one, there are plenty of applications. However, standard Bluetooth settings in smartphones often limit simultaneous connection to just one device.

In this article, we will discuss all the current ways to synchronize two pairs of Xiaomi headphones (including the Redmi AirDots, Mi True Wireless, Buds, etc.), learn how to use the built-in Mi Dual Audio features, bypass restrictions through third-party applications, and even configure connection on devices without dual audio support.

Built-in Mi Dual Audio: How it works and on which devices is available

The most reliable way to connect two Xiaomi headphones at once is to use Mi Dual Audio’s proprietary technology, which allows you to stream sound to two pairs of Bluetooth headsets synchronously, but does not work on all smartphones and headphones.

The function is available on the following devices:

• 📱 Smartphones: Xiaomi Mi 10/11/12/13, Redmi Note 10/11/12, POCO F3/4/5 and newer (c) MIUI 12.5+).
• 🎧 Headphones: Mi True Wireless Earphones 2/3, Redmi AirDots 2/3, Buds 3/4 Pro and other models with Bluetooth support 5.0+.

To activate Mi Dual Audio:

1. Open Settings → Connections and Sharing → Bluetooth.
2. Put the first pair of headphones on.
3. Slap the icon. ⚙️ Next to the headphone name and select Dual Audio).
4. Connect the second pair of headphones through the same section.

Support for Bluetooth 5.0+ smartphone|Xiaomi headphones with firmware no older than 2021|MIUI version 12.5 or later|Lack of active activity VPN or energy-saving regimes-->

⚠️ Attention: On some firmware MIUI Dual Audio may not be available even with hardware support, in which case you can try updating the software or using alternative methods in the following sections.

2. Connection through third-party apps (if Dual Audio is not available)

If your Xiaomi smartphone does not support Mi Dual Audio, you can use third-party applications.

• 🔊 SoundAssistant (from Samsung, but runs on Xiaomi) – allows you to duplicate sound on two Bluetooth devices.
• 🎵 Bose Connect – although designed for Bose headphones, it sometimes works with Xiaomi (requires Android 9)+).
• 🔗 Bluetooth Dual Audio – a dedicated application for dual connectivity (may require root on older devices).

Instructions for SoundAssistant:

1. Download the app from Google Play.
2. Connect the first pair of headphones through standard Bluetooth settings.
3. Open SoundAssistant, go to Additional → Double audio.
4. Activate the option and connect the second pair of headphones.

⚠️ Note: When using third-party applications, audio delays (up to 200-300 ms) and periodic connection breaks are possible. For stable operation, close all background applications that use audio (for example, YouTube Music or Spotify in the background).

Manual connection via developer settings (for power users)

If neither Mi Dual Audio nor third-party apps work, you can try activating the hidden option through the developer settings.This method is suitable for Android 10+ devices and requires caution.

Steps for activation:

1. Activate Developer Mode: Go to Settings → About Phone and tap the MIUI version 7 times.
2. Back to Settings → Additionally. → For developers.
3. Find the option Absolute Bluetooth Volume (ABS) and turn it on.
4. Reboot your smartphone and try connecting the second pair of headphones.

🔹 Note: On some firmware MIUI This method only works with headphones that support the protocol. AAC Check the specifications of your model on the official Xiaomi website.

4. Xiaomi headphone compatibility table for dual connection

Not all Xiaomi headphones support simultaneous connectivity, and the following is the compatibility table for popular devices:

🔹 Important: The data in the table is relevant for firmware MIUI For new models (e.g. Xiaomi Buds 5) check compatibility on the official website.

Typical problems and their solutions

When connecting two pairs of Xiaomi headphones at the same time, users often face the following problems:

• 🔇 The sound only goes in one pair: Check that both pairs are connected via Mi Dual Audio, not separately. Reboot the Bluetooth module (turn it off/on in the settings).
• 🔄 Permanent connection breaks: Make sure there are no interference sources (microwaves, other Bluetooth devices) around. SBC developer-setting.
• 🎚️ Different volume in headphones: Adjust balance in sound settings or use the SoundAssistant app to customize volume.
• 🔋 Fast battery drain: Dual Bluetooth connection increases power consumption. Close background apps and turn off Wi-Fi if it's not needed.

Critical information: Xiaomi headphones with Qualcomm chips (for example, Buds 3 Pro) support TrueWireless Stereo Plus technology, which reduces the latency of dual connection to 100 ms. Headphones on Airoha chips (for example, Redmi AirDots 2) can give a delay of up to 300 ms.

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If the sound in the headphones starts to break, try to reduce the bitrate in the Bluetooth codec settings. To do this, select Bluetooth Codec → SBC → set the bitrate to 328 kbps instead of 441 kbps in the Developer Settings.

Alternative methods: splitters and adapters

If the software methods do not work, you can use hardware solutions:

• 🔌 Bluetooth transmitter with support for two outputs: Devices like 1Mii B06 Plus or Avantek. APA-63 You can connect two pairs of headphones to the same source (even if the smartphone does not support Dual Audio).
• 🎧 3.5mm audio splitter: Suitable for Xiaomi wired headphones (such as Mi In-Ear Headphones) to connect two pairs to a single connector.
• 📡 FM-transmitter: Solution for older devices – broadcasts sound over radio frequency, but the quality will be worse than Bluetooth.

🔹 Example of setting up a Bluetooth transmitter:

1. Connect the transmitter to the smartphone via Bluetooth or 3.5 mm.
2. Activate Dual Link mode on the transmitter (instruction in the device manual).
3. Connect both pairs of headphones to the transmitter.

⚠️ Attention: With external transmitters, the audio delay can reach 500 ms, making it impossible to watch videos.

7. How to check the quality of sound synchronization

After connecting two pairs of Xiaomi headphones, it is important to make sure the sound is synchronized.

1. Include a track with a clear beat (e.g., "Bad Guy" by Billie Eilish or "Uptown Funk" by Bruno Mars).
2. Compare the sound in both pairs of headphones - the delay should not exceed 100-150 ms (otherwise the "echo" will be noticeable).
3. Use applications to test delay, such as SoundWire or Latency Test.

🔹 Synchronicity test: Clap your hands next to your smartphone microphone and listen to the sound playback in both headphones. If the claps are heard simultaneously, synchronization is normal.

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For minimal delay, use headphones with support for the LC3 codec (for example, Xiaomi Buds 4 Pro) and a smartphone with Bluetooth 5.2+.

FAQ: Frequent questions about connecting two Xiaomi headphones