Sony Headphone internal codes and Bluetooth SoCs

Sony WF-1000X BT

In a previous article I outlined many of the current and past Walkman model internal codes Sony uses.  While the Walkman models use ICX for their prefix, the headphones use HDX. I will try to keep this updated with the latest information but it is not always possible to find the code, the Bluetooth chip or both.

Sony WH-CH510

Most of the information is from the FCC documents, some from the Bluetooth certifications, and some from teardowns. Not all of the data will be complete because the images on the FCC are of poor quality or the code is not always shown in the pictures from the FCC or teardown.

Here are the links to the Bluetooth SoCs Sony has used for the past few years in their headphones.

Qualcomm CSR8675

Qualcomm CSR8670

Airoha AB1522

Realtek RTL8763B

Mediatek MT2811

Mediatek MT2822

Airoha AB1562M

Model	Code	Bluetooth SoC
Gaming headset	YY2961	??
WH-G700	YY2960	??
WH-G900N	YY2959	MT2811?
??	YY2958	??
WI-C100	HDX-2957	Airoha AB1562M?
??	YY2956	??
??	YY2955	??
WH-1000XM5	YY2954	??
WF-L900	HDX-2953	MT2822M
WF-C500	HDX-2952	Airoha AB1562M
WH-XB910N	HDX-2951	MT2822
(WF NC model)	YY2950	??
??	YY2949	??
WF-1000XM4	HDX-2948	MT2822S
WH-CH710N	HDX-2947	Airoha AB1531
WI-SP510	??	RTL8763B
WF-SP800N	??	MT2811SP
WF-XB700	HDX-2944	airoha AB1552
WH-1000XM4	HDX-2943	MT2811A
WF-H800	??	MT2811A
WH-H810	HDX-2941	MT2811
WH-H910N	HDX-2940	MT2811SP
WI-XB400	HDX-2937	RTL8763B
WH-CH510	HDX-2936	RTL8763B
WI-C310	HDX-2934	RTL8763B
WI-C200	HDX-2933	RTL8763B
WF-1000XM3	HDX-2931	MT2811
WH-XB700	HDX-2930	CSR8675
WI-1000XM2	HDX-2928	MT2811SP
WH-XB900N	??	CSR8675
WH-CH500	HDX-2918	Airoha AB1522
WH-1000XM3	HDX-2916	CSR8675
WI-C300	HDX-2914	Airoha AB1522
WF-SP700N	HDX-2911	CSR8675
WH-CH400	HDX-2910	Airoha AB1522
WH-CH700N	HDX-2908	CSR8675
WH-H900N	HDX-2893	CSR8675
WH-1000XM2	HDX-2892	CSR8675
WI-C400	HDX-2888	Airoha AB1522
WH-H800	HDX-2887	CSR8675
WF-1000X	HDX-2865	CSR8675
WI-SP600N	??	CSR8675
MDR-XB950N1	HDX-2854	CSR8675
WI-1000X	HDX-2853	CSR8675
MDR-ZX220BT	HDX-2852	CSR8675
MDR-XB70BT	HDX-2842	CSR8675
MDR-XB50BS	HDX-2840	CSR8675
MDR-XB80BS	HDX-2838	CSR8675
MDR-1000X	HDX-2837	CSR8675
MDR-XB650BT	HDX-2834	CSR8670
MDR-100ABN	HDX-2833	CSR8670
MDR-EX750BT	HDX-2821	CSR8675
MDR-1ABT	HDX-2819	CSR8670
MDR-ZX330BT	HDX-2795	CSR8670
MDR-ZX770BN	HDX-2793	CSR8670
MDR-ZX550BN	HDX-2783	CSR8670
MDR-ZX780DC	HDX-2863	unknown
MDR-XB950BT	HDX-2755	CSR8670
??	HDX-2734	unknown
MDR-10RBT	HDX-2587	unknown
MDR-RF6500	HDX-2516	unknown
MDR‐AS600BT	??	CSR8670
MDR-AS800BT	??	CSR8670
MDR-1RBT	??	CSR8670
DR-BTN200	??	CSR8670

 

There is no link to the MT2811 since there is no information at the moment. Not sure if Mediatek is just keeping it unpublished for now or will not publish it at all. From the Bluetooth certification, this might just be an Airoha Bluetooth chip re-badged as a Mediatek one, but that is only a theory. I will have a post up about the chip shortly. I have updated the links above.

Update (March 2021 update): Updated the list with all the current and upcoming devices. Any entries with * beside them are not 100% confirmed/certain.There are many unknowns, the WI-1000X might be the HDX-2865, but it could also be the WI-SP600N. There is a chance the WF-H800 could be HDX-2942, with the WF-SP800N and WI-SP510 being either the HDX-2945 and HDX-2946 respectively, or vice versa.

The greyed out lines are possible models but have not appeared on any certification site. There is no guarantee they will appear though. Like wise, I have replaced the YY codes with HDX, since as seen in the WF-C500 teardown, Sony still uses the HDX naming scheme in house for development but opts for YYxxxx when certifying products to hide their identity. 

Update (March 2022): Some new additions like the WH-1000XM5, gaming headsets, some SoC details. Some unknown models (if they exist), YY2949, YY2955, YY2956, YY2958. Perhaps these will be some future models or might no even exist.

 

If anyone is able to fill in any missing information, please leave a comment below. thanks.