Sony’s 1000X earbuds have been at the top of Engadget’s best wireless earbuds list since we first published it. With each new generation, the company managed to retain its crown, primarily thanks to a massive collection of features and an effective mix of sound quality and active noise cancellation (ANC) performance. Today, Sony revealed the latest entry in the series, the WF-1000XM6, delivering yet another redesign both inside and out. The company’s tried and true formula of features and audio performance remains, but it may no longer be enough to elevate the M6 above the competition.  

Design

For the third time in a row, Sony overhauled the 1000X earbuds’ design. While the WF-1000XM5 was a clear revision of the WF-1000XM4, the M6 is a departure from both of them. The company managed to reduce overall size even further by using a rounder, pill-shaped enclosure for the earbuds’ main housing. I certainly applaud Sony for making these as tiny as possible, but I’m still not a fan of the company’s foam ear tips. 

Sony introduced foam ear tips on the 1000XM4 earbuds and that led to an unstable fit during my testing. In fact, I ended up switching to the silicone M3 tips for a better feel. Things were slightly better on the M5, but the company regressed here on the M6. I tried every size of ear tips in the box and the fit test in the Sound Connect app only ever confirmed an air-tight seal in my right ear. This can impact sound quality and ANC performance, and the earbuds don’t feel like they’re sitting far enough inside my ears. I never got used to the fit in my three weeks of testing. 

The exterior panel of the WF-1000XM6 is still touch sensitive, accepting a variety of taps for playback controls, calls, noise settings and more. Sony also included a repeated tapping gesture that’s used for volume control. Keep tapping on the right earbud to raise the volume and do so on the left to lower it. My disdain for touch controls is well-documented at this point, but the M6 reliably and quickly responded without me having to repeat a tap sequence. 

WF-1000XM6 features

As is typically the case with its 1000X earbuds, Sony has loaded the M6 with features. Nearly all of these are holdovers from previous models, including Adaptive Sound Control that can automatically adjust settings based on your activity or location. Speak-to-Chat still pauses audio and activates ambient sound when you start talking, but it’s also still easily duped by coughs or clearing your throat. A quick access feature can put Amazon Music, Apple Music, Endel, Spotify and YouTube Music two or three taps away, depending on how you configure it.

The M6 earbuds also allow you to accept and reject calls with head gestures and you’ll have the option to pipe in your own voice during a call. Sony retained its existing option of operating the earbuds with voice commands: If you say “Assistant,” you can then ask it to play, pause, skip and replay songs. It will also adjust the volume for you, but that’s the extent of its abilities. 

Sony included some handy power management features as well. First, there’s an Auto Power Save mode that will disable any custom EQ settings, DSEE Extreme upscaling, Speak-to-Chat and voice control/voice assistant to reduce power consumption when the M6 hits 20 percent battery remaining. A Battery Care tool will extend the life of the earbuds’ battery by stopping charging before it reaches 100 percent. Lastly, Automatic Power Off will turn the earbuds off when they’re outside of the case and haven’t been worn for some time. 

Basic conveniences like multipoint Bluetooth, wireless charging and IPX4 water resistance are also here. Wear detection is onboard and you can use Sony’s EQ presets to alter the sound profile, or make your own and save them for future use. The Sound Connect app puts the battery levels of the individual earbuds and the case front and center, and you can edit the main screen to hide the features displayed there if you don’t need them.

Sound quality and ANC performance

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If Sony’s long list of features is its top advantage over the competition, overall sound quality is number two. For the WF-1000XM6, the company built new drivers with soft edges for deeper bass and a more rigid, lightweight dome for clearer treble. There are also notches around the edges for “clearer and smoother” sound quality overall, according to Sony. And of course, DSEE Extreme upscaling helps to recover details lost to compression while 360 Reality Audio and Spatial Sound Optimization are available for more immersive listening. 

I found the M6 earbuds at their best with the stock EQ and DSEE Extreme active, much like I have on previous 1000X models. The sound is deep and warm, with thick bass that’s adequate without ever overpowering the mix. Highs cut through and there’s ample midrange, keeping those finer details from getting lost. Erika de Casier’s atmospheric Lifetime is a great example of what the WF-1000XM6 can do. Vocals seem to float over the top of the bassline and drums, with percussive piano chopping though and subtle synth details popping up throughout. When strings arrive on “Seasons,” the M6 ushers them into a prominent position rather than relegating them behind the beat. 

On the WF-1000XM6, the chaos of Spiritbox’s “Holy Roller” doesn’t get condensed to a messy heavy metal roar either. And there’s plenty of texture in the synth-driven noise of Nine Inch Nails’ “As Alive As You Need Me To Be.” Even more straightforward rock tracks like Jimmy Eat World’s “Bleed American” have ample punch, with a wide soundstage that never feels claustrophobic or sounds compressed. Overall, the WF-1000XM6 holds its own against the best-sounding earbuds you can buy right now, though some of the competition, like Technics, have an edge in the way they handle the subtlest of nuances in songs.  

If you were hoping for knock-out ANC abilities, I must report that the WF-1000XM6 isn’t the noise-canceling powerhouse that is Bose’s QC Ultra Earbuds. The M6 struggles mightily with human voices. While that’s the downfall of many ANC earbuds, you’ll want to keep it in mind if you plan to wear these in the office. I found I could also still hear constant noise sources like fans and white noise machines when wearing the M6 — items that the QC Ultra Earbuds combat effectively.

Using the WF-1000XM6 for calls

Billy Steele for Engadget

For calls, Sony says the M6 uses AI for both background noise reduction and voice capture with the beamforming microphones. What’s more, the earbuds are equipped with eight total mics for ANC and calls, plus bone conduction tech for improved voice pickup. Unfortunately, all of that doesn’t lead to stellar performance during calls. While the WF-1000XM6 is perfectly usable for voice and video calls, the overall quality is far from pristine. To make matters worse, the earbuds make you sound overly processed when you encounter significant background noise. Since the company prided itself on the upgrades here, the results are disappointing. 

Battery life

Sony says the WF-1000XM6 will last up to eight hours on a charge or 24 hours when you factor in the full longevity of the charging case. During a battery test that I mostly ran with ANC active, I had no trouble hitting that single-charge figure. That’s with the volume around 75-80 percent and includes calls and virtual meetings where I switched over to ambient sound mode. 

It’s worth noting that I had DSEE Extreme upscaling active the entire time, which can impact battery life. Plus, if you use the aforementioned Auto Power Save mode, you can extend play time when you have about a quarter of a tank left. Going without some of the M6’s best features in the interest of having tunes for a workout or commute is a fair trade in my book. 

The competition

Billy Steele for Engadget

When sizing up the competition for the WF-1000XM6, you have to choose your priorities. Simply put, no other company offers the comprehensive suite of features that Sony does. That’s been true for a while now and it continues with this model. If you want the strongest active noise cancellation, that will be Bose’s second-generation QuietComfort Ultra Earbuds. If the best sound quality is your goal, the Technics AZ100 is your best bet in this price range. I’ll also mention Sennheiser’s Momentum True Wireless 4 which offers great sound quality, respectable ANC and a comfier fit than the M6, but that set is almost two years old at this point.

Wrap-up

Sony continues its run of great earbuds with the WF-1000XM6, but this model isn’t the polished package that some of its predecessors were. The two most obvious places the company is lagging behind the competition is ANC performance and overall voice quality, not to mention my continued dissatisfaction with the fit that Sony’s foam tips provide. The M6 is also more expensive than the previous version was at launch, which makes it even harder to overlook any flaws. What you will get on the WF-1000XM6 is a ton of features, great sound quality and reliable touch controls in a smaller package. And for some, that might be enough to make you forget about the rest. 

The WF-1000XM6 is available today in silver and black for $330.