Emily ParkerBy Emily Parker

Updated November 2026

Windows 10 does not use one fixed Bluetooth codec. It picks the best codec that both your PC and your headphones or speaker support, and it falls back to SBC when nothing better is available. In this guide, you will learn how Windows 10 chooses a codec, how to see which one is active, and what steps you can take if you want higher audio quality or lower delay.

How Windows 10 Chooses a Bluetooth Codec

When a Bluetooth audio device connects, the PC and the device negotiate a codec during the handshake. The Windows 10 Bluetooth stack offers the codecs its hardware and drivers support, and the device picks from that list. Support is built on three layers: the Bluetooth adapter, the Windows audio driver, and the headphones themselves.

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In practice, most Windows 10 machines fall into one of these outcomes:

  • SBC is the mandatory baseline. Every Bluetooth audio device supports it, so it is the default when nothing else matches.
  • AAC is common on Windows 10 with compatible adapters and drivers. It is often used with Apple-friendly headphones.
  • aptX, aptX HD, or LDAC appear only when the adapter, driver and headphones all support them. Many standard Windows 10 PCs do not offer these at all.

Windows 10 does not give you a simple codec menu. The codec in use depends on the combination of hardware, so the same PC may show different codecs with different headphones.

How to Check Which Codec Is Active

Windows 10 does not display the codec name in its basic settings. You have two practical ways to find it.

Method 1: Use the Bluetooth Device Properties

  1. Open Settings > Devices > Bluetooth & other devices.
  2. Click your connected headphones, then open More Bluetooth options or the device properties page.
  3. Check the Services tab for audio profiles. The Advanced Audio Distribution Profile (A2DP) confirms stereo audio is active, but it does not name the codec.

Method 2: Check the Driver or Adapter Software

Some Bluetooth adapters and vendor software list the active codec, such as Intel or Qualcomm utilities. If your adapter ships with a control panel, look for a codec or audio quality status display there.

How to Use a Better Codec on Windows 10

You cannot force a codec that your hardware does not support, but you can improve your chances of getting one.

  1. Update the Bluetooth driver. Open Device Manager, expand Bluetooth, right-click your adapter, and choose Update driver. Newer drivers add codec support.
  2. Update the headphone firmware. Use the manufacturer’s app to check for updates. Codec support is sometimes added this way.
  3. Turn on the best codec in the headphone app. Some headphones let you choose between a stable codec and a high-quality one. Check the audio settings.
  4. Use a USB Bluetooth adapter if your built-in one is limited. Adapters that support aptX or LDAC can add codec options to an older PC.

For a deeper look at a specific codec, see Windows 10 Aac Bluetooth Codec: How to Check and Use AAC on Windows 10. If you are on a newer system, Windows 11 Bluetooth Codec: How to Check and Switch to aptX or LDAC covers the differences.

Codec Comparison at a Glance

Codec Typical Support on Windows 10 Main Strength
SBC Always available Universal compatibility
AAC Common with compatible drivers Better quality than SBC at similar bitrates
aptX / aptX HD Adapter and headphone dependent Lower latency and higher fidelity
LDAC Limited, needs specific hardware High-resolution streaming

Common Mistakes and Tips

  • Assuming a codec is active just because the headphones are marked “aptX.” Both sides must support it.
  • Skipping driver updates. Outdated Bluetooth drivers often keep the PC stuck on SBC.
  • Expecting lower latency from a high-quality codec. Some high-bitrate codecs add delay, so check whether you need low latency for video or games.
  • Forgetting to reconnect after changing settings. Disconnect and reconnect the headphones so the codec renegotiates.
  • Qualcomm-based USB Bluetooth adapter: useful if your built-in adapter only offers SBC and you want aptX options.
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  • Intel Wi-Fi and Bluetooth card: a replacement module can bring newer Bluetooth features to some desktops and laptops.
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FAQ

Does Windows 10 support aptX?

Windows 10 can use aptX only if the Bluetooth adapter, driver and headphones all support it. Many standard PCs fall back to SBC.

Why does my Windows 10 PC keep using SBC?

SBC is the default when no better codec is shared by both devices. Updating drivers and firmware, or using a compatible adapter, is usually the fix.

Can I change the codec manually in Windows 10?

Windows 10 does not offer a codec menu. You can influence the choice through hardware, drivers and headphone settings, but the final pick is negotiated automatically.

Conclusion

Windows 10 uses whichever Bluetooth codec your adapter, driver and headphones agree on, with SBC as the fallback. Check your driver and headphone firmware first, since those updates most often unlock better codecs. If your hardware cannot support a higher-quality option, a compatible USB adapter is the next practical step.

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Emily Parker

About Emily Parker

Emily Parker is part of our editorial team and reviews and edits our headphone tech & types guides, checking product details against manufacturer specifications and owner feedback.