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| 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.
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| 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
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 Not sure if Mediatek is just keeping it unpublished for now or will not publish it at all.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.
The list is incomplete with a few entries missing. Any entries with * beside them are not 100% confirmed, either because of poor picture quality or conflicting evidence.
Update (January 2020 update): Some new devices and an unknown code. WH-1000XM4, WH-CH710N, WF-XB700, WF-SP800N, WI-SP510 and HDX-2947.
Update (January 2020 update): Some new devices and an unknown code. WH-1000XM4, WH-CH710N, WF-XB700, WF-SP800N, WI-SP510 and HDX-2947.
| Model | Code | Bluetooth SoC |
| WF-H800 | ?? | MT2811 |
| WH-H810 | HDX-2941 | MT2811 |
| WH-H910N | HDX-2940 | MT2811 |
| 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 | MT2811 |
| WH-XB900N | HDX-2929* | 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 |
| Model | Code | Bluetooth SoC |
| WH-H900N | HDX-2893 | CSR8675 |
| WH-1000XM2 | HDX-2892 | CSR8675 |
| WI-C400 | HDX-2888 | airoha AB1522 |
| WH-H800 | HDX-2887 | CSR8675 |
| ?? | HDX-2865 | 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 |
| Model | Code | Bluetooth SoC |
| 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 |
And now some missing codes. If anyone knows these codes, please leave a comment below and source of the information.
| Model | Code | Bluetooth SoC |
| WF-1000X | ?? | CSR8675 |
| WI-SP600N | ?? | CSR8675 |
| MDR‐AS600BT | ?? | CSR8670 |
| MDR-AS800BT | ?? | CSR8670 |
| MDR-1RBT | ?? | CSR8670 |
| DR-BTN200 | ?? | CSR8670 |
There some older codes I have from older models, I do not have any codes between HDX-2500 and HDX-2100. I am guessing the rest of Sony's wired headphones fill in these areas and in parts where there are large gaps in the codes above. The HDX-2865 is either the WF-1000X or the WI-SP600N, but I have not been able to find out which one it is so far.
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