Bluetooth APTX-HD

Hi Welcome to Microsoft community.Here’s a detailed breakdown of how to enable aptX HD Bluetooth codec on Windows 11, including why it’s challenging:

• aptX HD is a proprietary codec owned by Qualcomm. Windows 11 supports only basic codecs (SBC, AAC) by default.
• Hardware dependency: Your Bluetooth adapter and headphones/speakers must both support aptX HD.
• Driver limitations: Most generic Bluetooth drivers lack aptX HD licensing.

1. Check Hardware Compatibility a. Bluetooth Adapter

• Open Device Manager → Expand Bluetooth → Check your adapter model.
  • Qualcomm-based adapters (e.g., some Intel AX200/AX210 Wi-Fi/Bluetooth chips) may support aptX HD if drivers are modified.
  • Older adapters (e.g., Broadcom) likely lack support.

b. Headphones/Speakers

• Verify your device explicitly lists aptX HD support (check specs/manual).

2. Workarounds to Enable aptX HD Option 1: Use Manufacturer-Specific Drivers

• Intel AX200/AX210 Adapters:
  • Install modified drivers from Reputable technology forums.
  • These drivers unlock Qualcomm codecs (aptX HD/LL, LDAC).
• Other Adapters:
  • Check the manufacturer’s site for "SW Suite" drivers (e.g., CSR Harmony).

Option 2: Third-Party Bluetooth Stacks

• Tweaking Tools:
  • Use Bluetooth Tweaker to force codec priority.
  • Alternative A2DP Driver (experimental): Replaces Windows’ A2DP driver to enable custom codecs.

Option 3: USB Bluetooth Transmitter

• Purchase a transmitter with aptX HD support .
• Bypasses Windows’ limitations by handling audio encoding externally.

3. Verify Active Codec
4. Pair your headphones.
5. Go to Settings → System → Sound → More sound settings.
6. Right-click your Bluetooth device → Properties → Advanced.
7. Check the "Bluetooth Audio Codec" dropdown. If aptX HD appears, select it.

• No driver can add aptX HD if your adapter lacks Qualcomm’s licensing.

4. Alternatives

• Use a wired connection or USB DAC for lossless audio.
• Switch to LDAC (if supported) via third-party tools(requires Android bridging).

If you share your Bluetooth adapter model and headphone specs, I may provide more advice! Best regardsDerrick Qian | Microsoft Community Support Specialist

Thanks Derrick, the long post is very helpful.

I've just received the cheap Creative Aurvana Ace 2 today and I'm experimenting:

• Using the extra BT-W6 dongle yields flawless results (I was very interested in the GMAP profile for low latency - and it's great) - but I'd rather not have the dongle plugged in all the time with only 2 usb c ports on my laptop.
  EDIT: I can select whatever bluetooth audio codec I want from the Creative App.
• Not using the dongle works too, but only the left earbud appears in bluetooth devices (yet both earbuds work fine and in stereo). It seems Windows doesn't know that earbuds can now appear as two separate devices.

Without the dongle, I'm unable to see what codec is used. I have enabled BT LE (the bluetooth card is a Mediatek 7925). I don't have any "Bluetooth audio codec" dropdown menu in the old control panel (point 3.4 in your post) so there's no way I can tell which codec is used (Arch linux lets me select any codec out of the box: LC3 / AAC / AptX) - the earbuds still sound good to me.

EDIT2: I'm so dumb - when you click "disconnect", the earbuds TELL you: "LE audio disconnected" so I guess it's LC3 ? - the manual says that if it's regular crappy SBC, the buds just say "Bluetooth audio disconnected".

They appear as headphones in output devices:

and in device manager, I get 2 devices (L & R ?)

Default bluetooth support in Windows 11 does seem messy...

the 2 instance of Aurvana Ace 2 is that it can simultaneously connect 2 devices.

Interesting. No experience here with the ARM systems.

As long as a USB port is available, an inexpensive USB DAC will improve audio, a better sounding (and easier) solution than the 'lossless' Bluetooth codecs.

The solution doesn't work for Windows ARM systems (like the Surface Laptop 7). However I guess as the processor is a Qualcomm the licence problem shouldn't be there, should it? It would really help!