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Sony WH-1000XM4: Leaks confirm IR sensor and MediaTek Bluetooth chip for upcoming US$349.99 ANC headphones

The Sony WH-1000XM4 will support SBC, AAC and LDAC. (Image source: Sony via Best Buy)
The Sony WH-1000XM4 will support SBC, AAC and LDAC. (Image source: Sony via Best Buy)
The Sony WH-1000XM4 will have an IR sensor for pausing and resuming playback, The Walkman Blog has confirmed. Due to be released on June 23, Sony's new premium over-ear headphones will feature a MediaTek Bluetooth chip too, eliminating the possibility that the WH-1000XM series would continue to support Qualcomm's aptX and aptX HD codecs.
Alex Alderson,

The release of the Sony WH-1000XM4 is long overdue. Not only has Sony been selling the WH-1000XM3 for almost two years, but also it certified the WH-1000XM4 with the FCC in December 2019. The release of the WH-1000XM4 has become so protracted that multiple retailers have already leaked the headphones, while even the FCC's confidentiality agreement with Sony has expired.

Now Xuan Vu Audio, a Vietnamese YouTube account, posted its review for the WH-1000XM4. Xuan Vu Audio has since taken down its video, but it has confirmed the presence of a hitherto unknown IR sensor in the WH-1000XM4 headphones. Oddly, none of the WH-1000XM4 retail listings mentioned this sensor, which The Walkman Blog asserts will allow the headphones to control audio playback by sensing when you have removed or placed them on your head. The rest of the video confirms the design changes that Sony has made for its new headphones, which we have outlined here.

Separately, the Bluetooth SIG has certified the WH-1000XM4. The listing declares that the WH-1000XM4 will feature the Mediatek MT2811S Bluetooth chip that Sony also uses in the WI-1000XM2, WH-H810 and WH-H910N. In other words, the Bluetooth SIG has unequivocally confirmed that the WH-1000XM4 will not support Qualcomm codecs like aptX and aptX HD. 

Sony is expected to launch the WH-1000XM4 before the end of this month, possibly on June 23. The headphones should retail for US$349.99, too. 

The hidden IR sensor in the Sony WH-1000XM4. (Image source: Xuan Vu Audio via The Walkman Blog)
The hidden IR sensor in the Sony WH-1000XM4. (Image source: Xuan Vu Audio via The Walkman Blog)
A still from the Sony WH-1000XM4 review video before it was pulled. (Image source: Xuan Vu Audio via The Walkman Blog)
A still from the Sony WH-1000XM4 review video before it was pulled. (Image source: Xuan Vu Audio via The Walkman Blog)
The Sony WH-1000XM4 has a MediaTek MT2811S Bluetooth chip, according to the Bluetooth SIG. (Image source: Bluetooth SIG via The Walkman Blog)
The Sony WH-1000XM4 has a MediaTek MT2811S Bluetooth chip, according to the Bluetooth SIG. (Image source: Bluetooth SIG via The Walkman Blog)

Source(s)

Bluetooth SIG & Xuan Vu Audio via The Walkman Blog (1) (2)

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 06 > Sony WH-1000XM4: Leaks confirm IR sensor and MediaTek Bluetooth chip for upcoming US$349.99 ANC headphones
Alex Alderson, 2020-06-15 (Update: 2020-06-15)
Alex Alderson
Alex Alderson - News Editor - @aldersonaj
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.