The Sony WF-1000XM6 doesn't include aptX support because Sony focuses on their proprietary LDAC codec, which actually delivers superior audio quality with nearly 3x the bandwidth.
Codec Comparison
| Codec | Max Bitrate | Quality Level | |-------|-------------|---------------| | LDAC | 990 kbps | Near-CD quality | | aptX HD | 576 kbps | High quality | | aptX | 384 kbps | Standard quality | | AAC | 256 kbps | Apple standard | | SBC | 328 kbps | Universal fallback |
LDAC's higher bandwidth enables wireless audio that approaches wired quality—something aptX simply can't match.
What the WF-1000XM6 Supports
- LDAC: Sony's audiophile-grade codec (up to 990 kbps)
- AAC: Standard codec for Apple devices
- SBC: Universal Bluetooth fallback
- LC3: New LE Audio codec for low latency
Practical Impact by Device
Android phones (2018+): LDAC support is built into Android 8.0 and later. Your phone will automatically use LDAC for the best quality—better than aptX would provide anyway.
iPhones: Use AAC regardless of earbuds. iPhones don't support LDAC or aptX, so this limitation doesn't affect Apple users.
Windows PCs: Mixed support. Some support LDAC, others may be limited to SBC. This is where aptX absence can be noticeable.
When aptX Absence Might Matter
You may notice the missing codec if you:
- Use older Android devices with aptX but no LDAC support
- Frequently switch between devices with varying codec support
- Use legacy Bluetooth transmitters
Optimizing Your Connection
In the Sony Sound Connect app, adjust connection priority:
- Sound Quality: Maximum LDAC bitrate
- Stable Connection: Steps down to prevent dropouts
- Low Latency: Uses LC3 for gaming
Bottom line: For most users with modern devices, LDAC provides better audio quality than aptX would have, making this a non-issue in practice.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from 1 retailer in ShopSavvy's price data, most recently seen Mar 18, 2026.
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