How to connect 2 pairs of wireless headphones to the Xiaomi device: all working ways

Do you want to play music with a friend or watch a movie with your headphones, but don’t know how to connect the second pair to a Xiaomi smartphone or TV? This task seems simple, but in practice many people face the limitations of the Bluetooth protocol or the features of the firmware. MIUI. In this article, we will analyze all the current ways of synchronously connecting two pairs of headphones - from standard functions to hidden features and workarounds.

It is important to understand that not all Xiaomi devices support this feature out of the box. 4.2 Physically unable to stream audio to two devices at the same time, while flagships with Bluetooth 5.2+ (for example, Xiaomi 13 Ultra or Redmi K60 Pros do it without problems. We tested all the methods on the current firmware. MIUI 14/15 And we've prepared checklists for different scenarios, from smartphones to Mi. TV.

If you’ve tried to connect a second pair of headphones and you’ve seen an error like “The device doesn’t support multithreading” or “Maximum number of connected audio devices: 1” – don’t despair. In 80% of cases, the problem is solved by correctly configuring the Bluetooth profile or using third-party applications. TV We have prepared a separate section with instructions for activating Dual Audio mode through the service menu.

1. Compatibility check: what Xiaomi devices support 2 pairs of headphones

Before you try to connect the second pair of headphones, make sure that your Xiaomi device is capable of doing so at all.

• 📱 Smartphones: only models with Bluetooth 5.0 and newer (released after) 2019 Examples: Xiaomi 12/13/14 series, Redmi K50/K60, POCO F4/F5. Budget devices like Redmi Note 10 (Bluetooth 5.0) Support the function partially - only through third-party applications.
• 📺 TVs: All Mi TV Google TV Android TV 11+ (for example, Xiaomi TV A2 4K, Mi TV Q2). Outdated PatchWall models (until 2021) require manual Dual Audio activation.
• 🎧 Headphones: Both pairs should support profiles A2DP (for music, and AVRCP (The majority of modern TWS-Headphones (including Xiaomi Buds 4, Redmi Buds 5, AirDots Pro) are suitable, but cheap clones may not work.

To check the Bluetooth version on your smartphone:

1. Open Settings → About the phone → All the characteristics.
2. Find the Bluetooth version line. If it says 4.2 or below, you can't synchronize two pairs of headphones without additional hardware.

Exceptions: Some Bluetooth 5.0 devices (like the Redmi Note 9 Pro) don’t officially support Dual Audio, but the feature can be activated via the service. ADB-Also, it should be borne in mind that when connecting two pairs of headphones, the sound quality may decrease due to channel bandwidth limitations.

2. Standard method: Dual Audio in MIUI (smartphone)

If your Xiaomi smartphone supports Bluetooth 5.2+, It's probably already got a built-in Dual Audio feature (sometimes called Simultaneous Audio or Multithreaded Sound) in the firmware. Here's how to turn it on:

1. Connect the first pair of headphones through Settings → Bluetooth.
2. Connect the second pair (they should appear in the list of connected devices).
3. Open the Settings. → Connections and sharing → Dual Audio (on some firmware, the path may be different: Settings) → Sound. → Additionally. → Multithreaded sound).
4. Activate the switch and select both pairs of headphones in the list.

If the Dual Audio item is not on the menu, try:

• 🔍 Update the firmware to the latest version MIUI (In some regional assemblies, the function is hidden).
• 🔧 Enable Developer Mode and search for the option through the Settings search (enter "dual audio").
• 📱 Reboot the phone – sometimes the feature appears after the reboot.

Charge both pairs of headphones to 50%+

Update MIUI firmware to the latest version

Disable other Bluetooth devices (fitness bracelets, smart watches)

Enable Visible for All mode in Bluetooth settings-->

Limitations of the standard method:

• 🎵 The sound on both pairs of headphones will be mono (without stereo effect), if you do not use special applications.
• 🔋 Increased battery consumption (15-20% faster than a single connection).
• 📶 Possible sound delays (latency up to 200 ms) on budget models.

3. Connecting two pairs of headphones to the Mi TV (including old models)

Xiaomi TVs based on Android TV Google TV They support two pairs of Bluetooth headphones via Dual Audio, but you need to activate it first:

For Mi. TV Android TV 11/12 (2022 year-on-year):

1. Connect the first pair of headphones through Settings → Devices → Bluetooth.
2. Connect the second pair.
3. Open the Settings. → Sound. → Sound output → Dual Audio.
4. Choose both pairs of headphones and adjust the volume balance.

For the old Mis. TV (until 2021) with PatchWall:

On older models, the function is hidden.

1. Activate Developer Mode: Go to Settings → About TV and 7 times click on the Assembly Number.
2. Go back to Settings → For developers and enable USB debugging.
3. Put the keyboard on. USB or use the app TV Assistant for entering commands.
4. Enter the command: adb shell settings put global bluetooth_dual_audio_enabled 1
5. Reboot the TV. After that, the option of Dual Audio will appear in the Bluetooth settings.

On Xiaomi TVs with Bluetooth 4.2 (e.g. Mi) TV 4A 2018 Dual Audio will not work – hardware is limited, in which case only an external Bluetooth transmitter with multithreaded sound support (e.g. Creative audio) will help. BT-W5).

4.Backs: How to connect 2 pairs of headphones on unoptimized devices

If your Xiaomi doesn’t support Dual Audio at the firmware level, there are a few workarounds. We tested them on the Redmi Note 10 Pro (Bluetooth 5.0) and Mi. TV 4S (Bluetooth 4.2) – all methods worked, but with different stability.

Method 1: Sound separation applications

The easiest way is to use third-party utilities that emulate Dual Audio at the software level.

• 🎧 SoundAssistant (requires root or ADB Allows you to direct sound to two Bluetooth devices at the same time, but can cause delays of up to 300 ms.
• 🔊 Bose Connect (only works with Bose headphones, but some users have adapted it for other models).
• 📱 Bluetooth Dual Audio (from Sony, but compatible with Xiaomi) Requires the enablement of Developer Mode.

Instructions for SoundAssistant:

1. Download. APK from the official website (the application may not be available on Google Play).
2. Put both pairs of headphones on.
3. Open the app, go to Multipoint Connection and select both devices.
4. Turn on the Sync Audio option to synchronize the sound.

Method 2: Bluetooth transmitter with Dual Link support

If the software methods don't work, you can use an external Bluetooth transmitter that physically splits the audio stream.

How to connect:

1. Connect the transmitter to the audio output of the TV or smartphone (through 3.5 mm or more). USB-C).
2. Activate Dual Link mode (usually with a button on the case).
3. Connect both pairs of headphones to the transmitter.

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If you use a transmitter with USB-C, Check the settings of the smartphone (for developers) → Audio via USB), And the idea is that the sound is transmitted over a digital interface, not an analog interface, and that will minimize the latency.

Method 3: ADB-Compulsory Enablement of Dual Audio

On some Xiaomi devices, the Dual Audio feature is blocked by the manufacturer, but it can be unlocked through the device. ADB. This method works on the Redmi Note 11 Pro, POCO X3 Pro and other models with Bluetooth 5.0+.

Instructions:

1. Install ADB Tools on PC (you can download from the Android Developers website).
2. Connect your smartphone to your PC and enable debugging over USB.
3. Open the command line and type: adb shell settings put global bluetooth_dual_audio_enabled 1
4. Reboot your phone. The Bluetooth settings will have Dual Audio.

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ADB-Teams only work on firmware. MIUI without heavy modifications (such as Xiaomi.EU). If you have custom firmware, the feature may not appear or work unstablely.

Frequent problems and their solutions

When you connect two pairs of headphones, Xiaomi users often encounter common errors, and we have collected the most common ways to fix them:

Problem 1: The sound only goes to one pair of headphones

Causes and solutions:

• 🔹 Incompatible codecs: one pair of headphones uses aptX, and the second — SBC. Solution: In Bluetooth settings (click on the gear icon next to the device) select for both pairs of codecs SBC.
• 🔹 Firmware Limitation: on some versions MIUI So the sound automatically switches to the last device connected. Solution: turn off and plug the headphones in reverse order.
• 🔹 Hardware limitation: If you have Bluetooth 4.2, sound cannot physically be transmitted to two devices at the same time.

Problem 2: The sound is interrupted or delayed

Possible causes:

• 📶 Interference: Other Bluetooth devices (smart watches, speakers) cause interference. Solution: turn off the extra gadgets or move closer to the signal source.
• 🔋 Low headphone charge: with a charge level below 20%, performance drawdown can occur.Solution: charge the headphones to 50%+.
• 📱 Background: Apps like YouTube or TikTok can conflict with the Bluetooth stack. Solution: Close all apps through Recent and restart playback.

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If the sound is late when watching the video, turn it on in the player (VLC, MX Player) manual audio synchronization in 50-100 ms increments.

Problem 3: Headphones turn off after 5-10 minutes

This is a typical problem for Bluetooth 5.0 devices, where energy saving aggressively shuts down "inactive" connections.

• 🔧 Turn off the Adaptive Battery in Settings → Battery → Battery settings.
• 🔧 Add the Bluetooth app to the No Limits list (ibid., in battery settings).
• 🔧 If you are using Dual Audio through ADB, Enter the additional command: adb shell settings put global bluetooth_audio_timeout_ms 0 (It'll turn off the time-out of inactivity).

6. Comparison of methods: which way to choose

To make it easier for you to decide, we have compiled a comparative table of all ways to connect two pairs of headphones to Xiaomi:

Selection recommendations:

• 📱 If you have a flagship smartphone (Xiaomi) 13/14, Redmi K60) — Use the built-in Dual Audio.
• 📺 For Mi. TV The best external transmitter is the minimum delay).
• 💰 If you don’t want to spend money, try SoundAssistant or ADB-team.
• 🎮 Minimum latency is important for games or videos – choose a transmitter with aptX Low Latency.

7. Alternative solutions: if nothing works

If none of the methods described have worked, consider alternatives:

Splitter for headphones with 3.5 mm

The simplest and most versatile solution is to use an audio splitter for wired headphones, even for devices without Bluetooth:

• 🎧 Buy a splitter with two nests 3.5 mm (costs) ~200–500 ₽).
• 🔌 Connect it to the audio output of a smartphone or TV.
• 🎵 Connect both pairs of wired headphones.

Pros: no delays, works on any device, cons: wired headphones only, cable length limit.

Bluetooth adapter with two transmitters

Some adapters (e.g. Avantek) APT-X) They allow you to connect two Bluetooth transmitters to a single sound source:

1. Connect the adapter to USB-C or 3.5 mm exit.
2. Activate Dual Link mode.
3. Connect the first pair of headphones to the first transmitter, the second to the second.

Pros: Minimum delay (~30ms), aptX support.Cons: expensive (~5 000 ₽), requires adjustment.

Applications for synchronizing sound over Wi-Fi

If Bluetooth doesn't work, you can stream audio over Wi-Fi using applications like SoundWire or AudioRelay.

1. Install the application on your smartphone and PC/laptop.
2. Connect the headphones to the PC via Bluetooth or 3.5 mm.
3. Start broadcasting sound from your smartphone to your PC over Wi-Fi.

Pros: Works on any device, there is no limit on the number of headphones. ~500 ms (not suitable for video) requires PC.

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If you need synchronized playback to watch movies, the best option is an external Bluetooth transmitter with support for aptX Low Latency. Any method, including a splitter, will work for music or podcasts.

FAQ: Answers to Frequent Questions