Rumor suggests Sony WF-1000XM4 to come with improved battery life and HD audio upscaling

Rumor suggests Sony WF-1000XM4 to come with improved battery life and HD audio upscaling

Watch out AirPods, the Sony WF-1000XM4 are a long-awaited successor to one of the best wireless earbuds ever – and they could come with two major upgrades. A prototype of an upcoming pair of Sony wireless noise-canceling earbuds with the model number YY2948 has been certified by the FCC and Bluetooth SIG, and should the code name really match the Sony WF-1000XM4, we could be in for some major upgrades.

Chief among these is the use of Bluetooth 5.2, which will give the wireless earbuds longer battery life thanks to lower power consumption and greater bandwidth to transmit data – which may also make for better sounding audio.

The FCC filing for the same Sony earbuds reveals a new MediaTek MT2822S chip inside, which reportedly brings with it an improved digital signal processor (DSP), hardware ANC, feedforward microphones, voice prompts, and a smaller overall footprint. The FCC documents also include a render of the buds’ housing. While it doesn’t reveal much, it appears to be a bit more round in shape, as seen on Sony’s other recent offerings like the Sony WF-SP800N.

The choice of MediaTek and not Qualcomm for the processor could mean that the Sony WF-1000XM4 will once again skip aptX and aptX HD support. However, The Walkman Blog thinks the higher power consumption could be an indication of LDAC support – which was a notable omission on the XM3.

Revealed in July 2019, the Sony WF-1000XM3 were praised for their sound profile and effective noise cancellation. Understandably, fans waited to see how Sony would outdo themselves.

We first heard about the WF-1000XM4 in February, where a purported retail box revealed a new design and some key specifications – such as the use of LDAC – but we hadn’t heard if the earbuds would support aptX or not.

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