Why Codec Choice Is Important for Sound in Xiaomi
When you connect wireless headphones to a Xiaomi smartphone, the sound quality depends not only on the headset model, but also on the Bluetooth codec you choose. This small but critical parameter determines how the audio stream will compress before being transmitted through the air – which means it affects the detail, dynamics and even delays when watching video.
In 2026, Xiaomi smartphones (from the budget Redmi Note 13 to the flagship Xiaomi 14 Ultra) support up to 5 different codecs: from the basic codecs. SBC advanced LDAC. But which one is really needed? Forum debates continue: some argue that aptX Adaptive provides the best balance of quality and stability for Xiaomi, others swear only that it is not. LDAC We've tested all of these options on real devices, and we're ready to give you some clear recommendations.
It is important to understand that there is no universal “best” codec. The choice depends on three factors: 1) your model of Xiaomi smartphone (not all codecs are available on budget chips), 2) the type of content (music, podcasts, games), 3) the headphone model (even the flagship Xiaomi Buds 4 Pro does not support aptX Lossless).
Let’s analyze each codec in detail – with tests, tables and life hacks for setting up.
What Bluetooth codecs support your Xiaomi
The list of available codecs depends on the chipset and Bluetooth version in your smartphone. Here is a brief summary of popular models:
| Xiaomi model | Bluetooth version | Supported codecs | Best Default Choice |
|---|---|---|---|
| Redmi Note 12/13, POCO X5 | 5.2 | SBC, AAC, aptX, aptX HD | aptX Adaptive (if any) |
| Xiaomi 13/13T, Redmi K60 | 5.3 | SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC | aptX Adaptive or LDAC |
| Xiaomi 14, Mix Fold 3 | 5.4 | SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LC3 | LC3 (headphone) |
| POCO F5, Redmi K50 | 5.2 | SBC, AAC, aptX | aptX (if the headphones support) |
To find out what codecs are available on your device: 1. Connect your headphones via Bluetooth. 2. Open Settings → Connected devices → Settings gear next to the headphones → Sound quality. 3. In the list of Codec you will see all available options.
Please note that even if the smartphone supports LDAC, Headphones may not "understand" it. For example, Xiaomi Buds 4 Pro work with the same device. LC3 and AAC, But not with aptX. Check the specifications of your headset!
SBC: A basic codec that always works.
SBC (Subband Coding is the granddaddy of Bluetooth codecs, a must-have for all devices with support. A2DP (It works everywhere, from cheap Redmis. A2 Xiaomi 14 Pro, and even in car radios.
Advantages SBC:
✅ Stable connection without breaks.
✅ Minimum power consumption (earheads will last longer).
✅ Compatible with 100% devices.
Disadvantages:
❌ Low sound quality (compression up to 328 kbps, loss of high frequencies).
❌ Notable artifacts on loud tracks (e.g., in metal or EDM).
❌ Delay. ~100-150 ms (problems with video synchronization).
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If your headphones suddenly start to “crack” at high volume, try manually switching to the headphone. SBC — This often solves the problem of codec overload.
When to use SBC:
🔹 For podcasts, audiobooks, radio (where quality is not critical).
🔹 If the headphones are discharged too quickly on other codecs.
🔹 In public transport, where connection stability is important.
⚠️ Note: Some Xiaomi models (e.g. Redmi) 10C) SBC It defaults to low-complexity, which makes the sound worse. To fix this, install the Bluetooth Audio Codec app from Google Play and select the option. SBC XQ (55 ms).
AAC: Gold standard for Apple, but not for Xiaomi
AAC (Advanced Audio Coding is the codec that Apple uses in its AirPods. It's better than that. SBC Quality (up to 250-350 kbps), but in practice, Xiaomi does not work perfectly in the ecosystem.
Problems AAC Xiaomi:
🔸 Unstable bitrate (can "sink" up to 200 kbit / s with a weak signal).
🔸 Delays up to 150-200 ms (worse than aptX).
🔸 On some chipsets (e.g. Snapdragon) 6xx) The sound can be "fragmented" at high frequencies.
When AAC justified:
🎵 For streaming services (Spotify, YouTube Music), where the initial bitrate is below 320 kbit / s.
🎧 If your headphones do not support AptX or LDAC (For example, Xiaomi Buds 3 Pro).
📱 On smartphones with a chipset MediaTek (there) AAC It is often more stable than AptX).
Why? AAC It sounds bad on Android?
How to improve sound through AAC: 1. In Bluetooth settings, select Sound Quality Priority (if any). 2. Turn off Absolute Volume in the Developer Settings (Settings) → The phone. → Version. MIUI (tap 7 times) → For developers → Turn off absolute volume. 3. Use a player with your own decoder (e.g., Poweramp or Poweramp). USB Audio Player Pro).
aptX and aptX Adaptive: the best balance for Xiaomi
The aptX family of codecs (developed by Qualcomm) is the gold standard for Android devices.
✅ Bitrate up to 352-576 kbit / s (depending on the version).
✅ Delay is only 40–80ms (ideal for gaming and video).
✅ Minimum quality loss even at high frequencies.
On Xiaomi smartphones, there are three options:
1. aptX Classic (352 kbit / s) - the basic version, there is even on budget models.
2. aptX HD (576 kbps – improved detail, but requires headphone support.
3. aptX Adaptive (279–420 kbit/s – dynamically adjusts to the communication conditions (the best choice for Xiaomi) 13/14).
Advantages of aptX Adaptive:
🔹 Automatically reduces bitrate at a weak signal (no breaks).
🔹 Optimized for Snapdragon chipsets (which is the majority of Xiaomi models).
🔹 Supported by most premium headphones (including Sony) WH-1000XM5 and Bose QuietComfort Ultra).
⚠️ Attention: On some firmware MIUI (especially global) aptX Adaptive can be displayed as aptX without specifying. To make sure that the adaptive version is used, check the bitrate in the Bluetooth Audio Codec app - it should swim in the range of 279-420 kbit / s.
How to turn on aptX on Xiaomi:
Connect headphones with support for aptX|Open the Settings. → Connected devices|Put it on your headphones. → Sound quality|Select aptX Adaptive (or aptX) HD, if available)|Reboot Bluetooth (turn off/on)
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LDAC: Hi-Res sound with pitfalls
LDAC — This is a codec from Sony, which promises “almost lossless” sound quality with a bitrate of up to 990 kbit / s. On paper, this is the best option for audiophiles, but in practice, the Xiaomi ecosystem has nuances.
Pluses LDAC:
🎧 Bitrate up to 990 kbps (in Quality Priority mode).
🎛 Support for sampling frequency 96 keto/24 bit (for Hi-Res audio).
🔊 A wider dynamic range compared to aptX.
Cons:
⚠ Discharges headphones 30-40% faster (compared to the SBC).
⚠ Unstable connection at a distance of more than 5 meters (frequent cliffs).
⚠ Delay. ~150–200 ms (not suitable for gaming).
⚠ On budget chipsets (e.g. Snapdragon) 6xx) It may sound worse than aptX due to poor optimization.
When to choose LDAC:
🎵 Only for listening to high-resolution local music (FLAC, WAV, DSD).
🎧 If you have support headphones LDAC** (Like Sony. WH-1000XM5 or Xiaomi FlipBudds Pro).
📱 On flagship models (Xiaomi 13 Ultra, Mix Fold 3) where hardware optimization is available.
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LDAC Xiaomi works best in Adaptive Bitrate (not Quality Priority) mode, as it reduces the number of artifacts at a weak signal.
How to set up LDAC for better sound: 1. In Bluetooth settings, select LDAC → Adaptive Bitrate. 2. In Poweramp, Neutron, set a buffer of 500–1000 ms for stability. 3. Turn off energy saving mode for Bluetooth (Settings) → Battery → Energy saving for applications → Bluetooth (disable)).
LC3: The future of Bluetooth, but not for everyone
LC3 (Low Complexity Communication Codec is a new standard introduced in Bluetooth 5.2:
✅ Higher quality with the same bitrate as SBC.
✅ Lower energy consumption (earphones last longer).
✅ Best sync for video and gaming (latency) ~20-50 ms).
The problem is, LC3 until it is maintained only:
🔹 On Bluetooth smartphones 5.2+ (Xiaomi 13/14, Redmi K60).
🔹 In headphones of the new generation (for example, Xiaomi Buds 4 Pro, Sony) WF-1000XM5).
🔹 In Android-based firmware 13+ (on MIUI 14/15).
If your device supports you LC3, It's the best choice for you:
🎮 Games (minimum delays).
🎥 Video viewing (perfect synchronization).
🔋 Long-term listening (saves the charge of headphones).
⚠️ Note: On some Xiaomi models (e.g, POCO F5) LC3 It can be displayed in the settings as LE Audio. It's the same thing -- a new standard for Bluetooth audio, built on top of that. LC3.
Which codec to choose: final recommendation
Here is a clear guide to choosing a codec depending on your task:
- 🎵 Music (Spotify, Apple Music, local tracks): aptX Adaptive (best balance) or LDAC (If the headphones support and smartphone flagship).
- 🎧 Podcasts, audiobooks: SBC (Saves charge, quality is not critical).
- 🎮 Games (PUBG, Genshin Impact, Call of Duty: aptX Adaptive or LC3 (minimum delays).
- 🎥 Video (YouTube, Netflix, TikTok): aptX Adaptive or LC3 (lip synchronization).
- 🚗 Car (music via Bluetooth): SBC or AAC (maximum compatibility).
If you don’t know what to choose, follow this algorithm: 1. Check which codecs your headphones support (see specs). 2. If you have aptX Adaptive, choose it. 3. If there is no aptX, but there is one. LDAC — Try it out (but watch for stability). 4. Budget models (Redmi Note 12) are better AAC or SBC.
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On Xiaomi smartphones with Snapdragon chipset 8 Gen 2/3 (Xiaomi 13/14) Best sound combination aptX Adaptive + Poweramp player with Hi-Res audio enabled.