The Sony WF-1000XM4 are the rumored follow-up to the best wireless earbuds you can buy right now, the Sony WF-1000XM3 – and as new leaks emerge, the hype is hotting up around these potentially class-leading in-ear headphones.
We've seen leaked renders of the Sony WF-1000XM4, giving us our best look at the upcoming earbuds yet. They follow leaked images of what appears to be a prototype version of the Sony WF-1000XM4 from the Walkman Blog, which speculates that the earbuds will launch on June 9.
Since then, Sony has posted an upcoming YouTube livestream – titled “Sony Announcement for Music Lovers June 2021” – which takes places on June 8 at 12pm ET / 9am PT / 5pm BST or 2am AEST on June 9. The slogan on the livestream’s placeholder thumbnail reads: “Truly silent. Tailored 4 you,” potentially hinting at a reveal for the WF-1000XM4 wireless earbuds.
An upcoming pair of wireless noise-cancelling earphones from Sony with the model number YY2948 has also been certified by the FCC (Federal Communications Commission) and Bluetooth SIG, and should the codename really match up with the Sony WF-1000XM4, we could be in store for a number of big upgrades.
Plus, photographs of the earbuds' packaging that was leaked to Reddit have given us a sneak peek at the design and some of the features we can expect from the Sony WF-1000XM4, including active noise cancellation and support for Hi-Res Audio.
Most recently, a new leak from WinFuture.de suggests they could have an eight-hour battery life and an IPX4 water resistance rating. We've also seen what looks like a promo video find its way online.
Of course, nothing is certain until Sony officially unveils the WF-1000XM4, but for now here's everything we know about the rumored earbuds, as well as all the things we'd like to see.
Cut to the chase
- What are they? A new pair of Sony wireless earbuds.
- When will they be released? Possibly in June 2021.
- How much will they cost? Probably around $230 / £220 / AU$399.
Sony WF-1000XM4 release date
Right now, there's no firm release date for the Sony WF-1000X4, but we think their launch is fairly imminent, given that it's been one-and-a-half years since the release of their predecessors. In fact, the earbuds could even launch in June.
The FCC filing that we think refers to the Sony WF-1000XM4 originally listed a date of September 27 as the time at which 'short term confidentiality' would cease – a typical indicator of when a product gets officially revealed by the company – but now that date has been updated to June 9.
That date is further corroborated by a Sony livestream set for June 8 at 12pm ET / 9am PT / 5pm BST / 2am AEST (June 9). The slogan on the livestream’s placeholder thumbnail reads: “Truly silent. Tailored 4 you,” potentially hinting at a reveal for the WF-1000XM4 wireless earbuds.
It makes sense that Sony would plump for a 2021 release date if the company wants to see off competition from Apple. The tech giant is rumored to be launching the Apple AirPods 3 and the AirPods Pro 2 at some point this year, and the latter in particular could be a rival for the Sony WF-1000XM4 as they'll likely come with active noise cancellation.
The fact that images of the Sony WF-1000XM4's packaging has been leaked also suggests that a release date could be coming soon – though, as we mentioned, these images are yet to be verified as genuine.
Sony WF-1000XM4 price
Again, there's no word yet on how much the Sony WF-1000XM4 will cost, but we'd be surprised if the company deviated too much from their predecessors' price.
When they launched, the Sony WF-1000XM3 cost $230 / £220 / AU$399, though prices have since dropped significantly as the buds have aged.
We expect Sony will target a similar price point for the WF-1000XM4, as it's a pattern we've seen from the brand before with the Sony WH-1000XM3 and the more recent WH-1000XM4 over-ear headphones.
Sony WF-1000XM4 design
We know quite a lot about the design of the Sony WF-1000XM4, thanks to a series of leaked renders and images – plus what appears to be a promotional video showing off the earbuds and mentioning a lot of the key features.
When it comes to the tweaked design of the updated in-ear headphones, we've got multiple sources to go off, including renders from prolific leaker Evan Blass:
Sony WF-1000XM4 pic.twitter.com/Z4j7YTVbDiMay 20, 2021
These images back up packaging photographs posted to Reddit in February by Key_Attention4766 (via The Walkman Blog), as well as images of what appears to be prototype models of the Sony WF-1000XM4.
Based on the images, it looks like the Sony WF-1000XM4 will have a sleeker build than their predecessors, with rounder housings and what look like memory foam ear tips.
The entirety of the round housings could be touch-sensitive, unlike the Sony WF-1000XM3, which feature a specific touch-sensitive area that allows you to control your music playback, summon your device's voice assistant, accept or reject calls, and enter Quick Attention mode.
The gold Sony logo has also changed slightly, now appearing on the side of the earbuds rather than on the top. Meanwhile, a gold accented piece on the outside of the earbuds could be an external noise cancellation microphone, as The Walkman Blog speculates.
The Walkman Blog also revealed leaked imagery of the WF-1000XM4 charging case, noting that its slightly higher output rating (5V at 140mA rather than 120mA) could hint at a slightly faster charging rate for the buds when housed in the case.
There's also speculation that the case could be wirelessly charged by Sony's upcoming Xperia 1 III flagship smartphone.
Using the USB-C port as a guide, The Walkman Blog has estimated the size of the new charging case to be roughly 60x38x28mm (LxHxD), which is a good deal more compact than the WF-1000XM3 case, which measures 78x62x28mm.
The Sony WF-1000XM4 could also come with an IPX4 water resistance rating, according to a leak from WinFuture.de, which would give them protection against rain or a little sweat while working out.
Sony WF-1000XM4 rumored features
We're starting to hear a lot more about the sort of features that will be arriving with the Sony WF-1000XM4 , and the specs leak started with images of the product packaging posted to Reddit as well as an FCC filing.
A prototype of an upcoming pair of wireless noise-cancelling earphones from Sony with the model number YY2948 has been certified by the FCC (Federal Communications Commission) and Bluetooth SIG and should the codename really match up with the Sony WF-1000XM4, we could be in store for a number of big upgrades.
Chief among them is the usage of Bluetooth 5.2 will give the true wireless earbuds better battery life thanks to its lower power usage and a wider bandwidth to transmit data – potentially allowing for better-sounding audio, too.
In fact, a leak from WinFuture.de, alleges that the earbuds will sport an eight-hour battery life with active noise cancellation turned on – an improvement of around two hours compared to their predecessors.
Meanwhile, the packaging images posted to Reddit suggests a return of the active noise cancellation technology that made the WF-1000XM3 so popular, and it’s likely that the Ambient Sound and Quick Attention modes will also make an appearance.
The packaging also includes a Hi-Res Audio Wireless certification, which means they could come with support for Sony's high resolution LDAC codec, alongside the AAC and SBC codecs already supported by the XM3.
There had already been murmurs that the Sony WF-1000XM3 would be getting a Hi-Res Audio upgrade, after the earbuds appeared very briefly on the Qualcomm aptX website, being described as 'aptX HD enabled'. This post was swiftly taken down, but not before it was spotted by The Walkman Blog.
As the post appeared in March 2020 and we haven't heard anything since, it's possible that Sony is saving aptX HD support for the WF-1000XM4.
However, the recent FCC filing that could refer to the Sony earbuds reveals a new MediaTek MT2822S chip inside, which is said to bring an improved digital signal processor (DSP), hardware ANC, feedforward mics, voice prompts and a smaller overall footprint.
The choice of going with 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 believes that the higher power consumption ratings could be an indication of LDAC support — which was a notable omission on the XM3.
Sony WF-1000XM4: what we want to see
While information on the Sony WF-1000XM4 is leaking out in dribs and drabs (indeed, Sony hasn't even confirmed their existence yet), we've had the opportunity to dream up a few things we'd like to see from the fourth-gen true wireless earbuds.
Support for 360 Reality Audio
We'd love for Sony to furnish the WF-1000XM4 with some of the features seen in the Sony WH-1000XM4, their over-ear siblings (and the best headphones of 2021).
One of these features is support for 360 Reality Audio, which is Sony's proprietary immersive sound technology. Designed to put you right in the center of your music, the technology places individual instruments within a virtual sphere, making you feel as though your favorite songs are coming at you from all angles.
As well as giving you another way to experience your music, 360 Reality Audio support could make the WF-1000XM3 a real rival for the AirPods Pro, which support Apple's own Spatial Audio tech.
DSEE Extreme audio upscaling
Another feature that Sony could potentially borrow from the WH-1000XM4 is DSEE Extreme audio upscaling. This AI-driven processing looks to restore detail from lossy compressed formats, and brings clarity to lower quality formats and files, and we were impressed with its capabilities when we tested the WH-1000XM4.
Speak-To-Chat and automatic pausing
Again, Speak-To-Chat was introduced along with the Sony WH-1000XM4, and we'd love to see it implemented once more with the WF-1000XM4. This feature allows the microphones inside the headphones to recognize when you've started talking, and pause your music while ramping up the ambient noise that’s being funneled into your ears.
Speaking of pausing your music, we'd like to see Sony introduce automatic pausing when you remove one earbud. It's something we've seen from lots of wireless earbuds on the market, and it seems like a simple upgrade.
Better battery life and wireless charging
With every new generation of true wireless earbuds, we like to see an improvement to battery life. The Sony WF-1000XM3 currently offer six hours from the buds themselves, and a further 18 hours from the charging case, and models like the Lypertek PurePlay Z3 have proven that far more is possible these days.
Another simple upgrade that Sony could make is the introduction of wireless charging capabilities. It's something that the Apple AirPods Pro do as standard, and with more and more people buying into wireless charging mats, it seems prudent to give these users the option to charge without a cable.
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