Last month, Sonos debuted its latest premium soundbar in the midst of a difficult year. The company initially delayed launching the $999 Arc Ultra, devoting more time to fixing the major issues that plagued its app since a botched update in the spring. Now that the soundbar is here, Sonos has rolled out its first product to feature its Sound Motion technology that offers increased bass performance from smaller components. This new transducer allowed the company to make other improvements to the Arc Ultra versus the original Arc, so it’s not just a matter of more low-end tone. So, what is Sound Motion exactly, and will it be available in other Sonos products?

What is Mayht?

The Sound Motion story starts with a company called Mayht. In April 2022, Sonos bought Mayht Holding BV, an audio company based in the Netherlands, for approximately $100 million. At the time, Sonos said Mayht “invented a new, revolutionary approach to audio transducers.” More specifically, the company re-engineered that foundational component of speakers to be smaller and lighter with no sacrifices to overall audio quality.

In a January 2022 interview with TechCrunch, Mayht CEO Mattias Scheek said the company began working on its speaker technology in 2016. He explained that the company would “defend” and license the tech rather than manufacture the drivers itself. Early potential use cases ranged from soundbars to compact subwoofers and smaller smart speakers. The company’s new approach would become the foundation for Sonos’ Sound Motion.

What is Sound Motion?

The first implementation of Mayht’s technology in a Sonos product via Sound Motion is inside the Arc Ultra soundbar. Sound Motion is a flat, brick-like driver where the motors are positioned at the sides and the membrane in the middle, allowing a greater range of movement for twice as much bass as the first Arc, by Sonos’ calculations. The four lightweight motors can displace more air inside the soundbar, which leads to increased low-end tone.

By replacing one large motor with four compact units, the Sound Motion transducer is up to three times smaller than a comparable “conventional” driver. But again, it still produces the same amount of bass. Those four motors power four voice coils, two moving in one direction and two in the opposite direction, enabling dual opposing diaphragms that cancel force and minimize vibrations. Sonos replaced cloth components with injection molded plastics for stable, linear travel. It also designed aluminum ribs to connect the motors to solidify the structure.

The motors themselves have a unique design. Sonos opted for dual magnets inside of each one to create increased force that gives the company more options when it comes to product design.

Sonos

“Particularly when we’re talking about soundbars, we are always constrained by the size of the products,” Sonos’ vice president of audio Chris Davies explained to Engadget. “Being able to squeeze the profile down to this opens up opportunities for us to create something that’s new and different.”

Even with twice the bass output of the Arc, the Arc Ultra is nearly the same size as its predecessor. Not only is that due to the fact that the Sound Motion transducer is smaller than a conventional woofer, but also because the performance is so improved that Sonos only needed one to double the bass output. That difference is immediately apparent when you play some thumping, chaotic rock tunes from Better Lovers or Kaytranada’s electronic hip-hip, as I experienced first-hand during my review of the Arc Ultra.

The Sound Motion tech sits on the right side of the soundbar while the amplification electronics occupy the same space on the left. Due to this location, I could hear the bass coming from one side of the Arc Ultra if I stood up close, but at a comfortable sitting distance from my TV, the low-end blends seamlessly.

“We’re able to get more bass out of a small package,” Davies explained. “We’re also able to do that in a way that gives us other flexibility around the design of the product, the architecture of the product and so on.”

Sonos

That flexibility is what led to improved overall audio performance on the Arc Ultra that’s a lot more than just adding bass. Since Sound Motion is designed to create a lot of bass from a compact component, Sonos then had the freedom to redesign the mid-range and high-frequency architecture as well. The company used multiple sizes of both mid-range drivers and tweeters for more positioning options, which allowed it to enhance the sound beamed out across a room.

“This is an evolution of what we've done,” he continued. “For Atmos content we’re doing a 9.1.4 rendering. This really is an augmentation of what we've done in the past, but it's adding a higher channel count by having all of these different elements now that we can play with.”

Sonos was able to employ two wide front channels to keep the sound stage immersive and use four separate height channels so that front and rear spatial sound wasn’t crammed together. The reconfiguration inside the Arc Ultra, again thanks to Sound Motion, also enabled the company to expand its speech enhancement feature with three levels of augmentation based on your needs.

“We've put a lot of energy into really trying to do a better job in terms of dialog clarity,” he said. As a result, Davies said, the company was able to deliver clearer dialog than in any of its soundbars ever.

Will Sound Motion be in future Sonos products?

The short answer: absolutely. You don’t spend $100 million on something to only put it inside one product. I’m willing to bet Sonos won’t just use it inside soundbars either. The company has already confirmed in its press materials that it anticipates “introducing more innovative products with Sound Motion in the future.” Sonos further explained that the use of the technology will depend on “the sound profile, design needs and price point” of any future speakers, and noted that each of its “acoustic architectures” are designed for the intended customer experience.

It’s easy to see how a small component capable of producing enormous amounts of bass would benefit Sonos’ more compact speakers. The company has consistently lacked deep low-end tone in products like the Era 100 and Move 2, despite the excellent clarity and detail these speakers exhibit. It would massively improve overall fidelity if Sonos could somehow cram a Sound Motion driver in future versions of these products. Additionally, the company’s most compact soundbar, the Ray, would be a much more compelling product for small spaces if it didn’t immediately require a separate subwoofer for adequate bass performance. With the Arc Ultra, for example, you can just use the soundbar for music since it has ample thump when a track demands it.

2024 has been a rough year for Sonos. The company’s would-be triumphant entry into the crowded headphones market was overshadowed by a disastrous app redesign. In the fallout of the botched software update, the company decided to delay products that were ready to be shipped to give itself more time to right the course. Consumer trust eroded, and people who already owned Sonos gear were living in a cycle of constant frustration.

Thanks to a number of rumors, we already knew that one of the pending product releases was the Arc Ultra ($999). A few weeks ago the company decided not to wait any longer to reveal it. While the design is mostly unchanged from the Arc that debuted in 2020, there are several key changes on the inside that make this a better all-in-one solution for people who don’t want to add more speakers to their living room setup. Sonos is promising better bass performance thanks to new speaker tech that’s debuting in the Arc Ultra, but just how good can it be?

Design

The refined design of the original Arc was a massive upgrade from that of the Playbar, and showed a progression from Sonos’ compact Beam soundbar. Honestly, the aesthetic is pretty timeless, in my opinion, and it’s a look that should age well for years to come. That said, it makes sense that Sonos would keep the design for the Arc Ultra, only making some minor changes to the exterior.

The Arc Ultra still comes in both black and white options, allowing you to choose what looks best in your living room or home theater. Sonos updated the controls to mirror what’s available on the newer Era 100 and Era 300 speakers, moving them to a top-facing bar at the back. There’s a volume slider on the right with play/pause and skip controls in the center. On the left side, Sonos gives you a microphone control so you can mute the built-in mics as needed.

And that’s really it in terms of design changes that you can see. The Arc Ultra is slightly shorter height-wise than the Arc, and it’s a little wider than its predecessor. Neither of which make a huge difference, and they won’t drastically change how you position the speaker beneath your TV.

Sonos

Inside, Sonos has re-engineered the Arc Ultra to improve audio performance. The biggest piece of this overhaul is the new Sound Motion woofer that enables better bass performance before you add a standalone wireless sub. The achievement here, thanks to the acquisition of audio company Mayht, is that the new component lays flat, taking up less room than a traditional cone-shaped woofer. The Sound Motion driver also helps deliver increased clarity and depth, on top of doubling the bass output of the original Arc.

Sonos redesigned the entire acoustic architecture of the Arc Ultra during the process of adding the Sound Motion woofer. The soundbar now houses three more drivers than the arc, a list that includes seven tweeters (two of which are upfiring), six mid-range drivers (midwoofers, as Sonos calls them) and the aforementioned woofer for a total of 14. The company also employs 15 Class-D digital amplifiers along with far-field mics for tuning and voice control.

There’s still only a single HDMI (eARC) port, which allows most modern TVs the ability to control the soundbar’s volume and mute options from your TV remote. Moreover, the Arc Ultra is compatible with Wi-Fi 6 and newly-added Bluetooth 5.3 connectivity allows you to stream from any device. And of course, AirPlay 2 is still on the spec sheet. One last thing I’ll mention here is that the Arc Ultra doesn’t ship with an optical adapter if you prefer that connection. The company will sell you one for $25.

Software and features

Since the Arc Ultra is a Sonos product, there are a lot of core features that are the same as they are on the company’s other devices. You can use the soundbar as part of a multiroom setup and Trueplay tuning is here to adjust the audio to the acoustics of the room. There’s still an adjustable EQ with options for bass, treble and loudness and a Night Sound mode makes things less boomy when someone in your house may be trying to work or sleep.

While Trueplay will give you the best sound customization for the sonic characteristics of your living room, Sonos is enabling a Quick Tune feature for the first time on the Arc Ultra. Here, the soundbar will use its internal mics, as opposed to your phone, to offer a certain degree of improvement. The company says it wanted to give people the option of something quicker than Trueplay, although the full-fledged tuning process doesn’t take very long at all.

Speech Enhancement has been a handy feature on Sonos soundbars for a while, giving you the ability to improve dialog clarity as needed. Before now, it was an all-or-nothing feature, but on the Arc Ultra, the company introduced three levels of speech boost to give you more options to better suit your needs. This means the soundbar can help you hear clearly over background noise or simply follow along better by elevating dialog above the rest of the soundtrack mix.

Billy Steele for Engadget

The trademark feature of Sonos’ Ace headphones is the ability to beam the audio from a compatible soundbar to the cans for a private home theater. That TV Audio Swap tool is available on the Arc Ultra, so you can instantly send the sound to the headphones with the press of a button. In fact, Sonos bundles the Arc Ultra and Ace headphones in a $1,373 set. What’s more, the Ace supports spatial audio with dynamic head tracking, so you can count on immersive sound even when you’re employing it on an individual basis.

Despite all of the problems that Sonos has had with its app, some of which it's still working to resolve, I didn't encounter any issues during my testing. The software crashed on me once when the Trueplay tuning process completed, but everything had already run its course and I didn’t have to repeat it. Other than that, the app has worked reliably over the last week while I’ve been putting the Arc Ultra through its paces. Most importantly, the software is stable and the full suite of controls for the new soundbar is available at launch.

Sound performance

The original Arc already sounded great, so Sonos really had its work cut out for it to further improve the audio quality for the Arc Ultra. Thanks to the improved bass of the Sound Motion tech, a change that also takes up less space, the company says it had the ability to then overhaul the mid-range and high-frequency components as well. By using multiple sizes of mid-range drivers and tweeters, Sonos was able to tweak the speaker positioning inside of the soundbar for improved projection and more immersive sound.

In addition to the enhanced bass performance, the second thing that was immediately apparent on the Arc Ultra was those improvements to the dimensional sound. Whether it was a quidditch match in a Harry Potter movie or zooming F1 cars in Drive to Survive, the soundbar now has better directional, immersive sound than its predecessor. Sonos says the Arc Ultra now renders Dolby Atmos content in a 9.1.4-channel setup, versus 5.0.2 with the Arc, which further contributes to the enveloping audio. Interestingly, I haven’t seen any of the competition claim four up-firing channels from the soundbar like Sonos does here (those that do are usually accounting for up-firing drivers in the rear speakers). You can really hear the difference from the second you fire up the Arc Ultra, and the effect is consistent across content sources.

Billy Steele for Engadget

The increased bass performance makes the Arc Ultra a much better speaker for music without a separate subwoofer. You won’t get the bombastic low-end tone the newly updated Sonos Sub 4 can produce, but there’s enough from the soundbar to give Kaytranada’s Timeless, Phantogram’s Memory of a Day and Bilmuri’s American Motor Sports plenty of booming backbone when a track demands it. There’s also still the trademark Sonos clarity I’ve come to expect over the years, which means finer details like the texture of synths, layered guitars and the nuance of acoustic instruments cut through the mix cleanly.

And speaking of clarity, the company’s new Speech Enhancement settings are also a big improvement. Being able to select how much of a boost this feature offered depending on either my needs right then or based on the overall tuning of the content is really nice. It allowed me to max out the dialog when watching movies after my toddler was asleep so that speech didn’t suffer when sound effects were louder during intense scenes of The Hobbit: An Unexpected Journey.

The competition

There’s no doubt the Arc Ultra packs in deeper, more immersive sound than its predecessor, but some people will still want a more robust setup to wring every ounce of audio out of a Sonos living room setup. The high-end choice for this is what Sonos calls the Ultimate Immersive Set, which includes the Arc Ultra, two Era 300s and the Sub 4. Right now, that will cost you $2,561. For something less expensive, you can get the Arc Ultra and the new Sub 4 (normally $799) for $1,708 (Premium Entertainment Set). And therein lies the biggest problem with Sonos soundbars: expanding your living room setup to get the most immersive experience gets very pricey very quickly when the centerpiece is already $999.

If you can live without all the conveniences of Sonos products, you can get an all-in-one package from Samsung for $1,500. With the Q990D, you’ll get the soundbar, two rear speakers and a wireless subwoofer in the same box. The setup offers 11.1.4 audio for excellent Atmos sound, thanks in part to up-firing drivers in the rear speakers. Samsung offers a host of handy features, from Q-Symphony audio with TV speakers, SpaceFit Sound Pro room calibration, Adaptive Sound audio enhancement, a dedicated gaming mode and more. The Q990D remains my top pick for the best soundbars for a lot of reasons, a key one being everything you could need comes in one all-inclusive package.

Wrap-up

The Arc Ultra is an obvious improvement over the Arc in the sonic department. New technology delivers on its promise to boost bass, clarity and immersive before you start adding extra components. Expanded features like Speech Enhancements and a quick-tune option offer new tools for dialing in the sound, while the stock Sonos experience remains intact. And thankfully, that includes an app that’s more stable than it was a few months ago. The Arc Ultra is still pricey at $999, but it exhibits a lot more sonic prowess than its predecessor for only $100 more.

You don’t need a set of AirPods to get wireless audio from your iPhone, iPad or Mac, but Apple’s earbuds and headphones offer a lot of convenient integrations with its other products that you won’t find anywhere else. After helping popularize true wireless earbuds with its original AirPods, the company has expanded its lineup to include noise-canceling models and a set of over-ear headphones. Here’s what you need to know about AirPods in general, along with the best overall, budget and over-ear picks from Apple’s current slate of products.

What you need to know about AirPods

When it comes to Apple’s earbuds and headphones, there are several things you’ll want to keep in mind before making your final decision. First, the AirPods are the open-design earbuds with no tip that allow some environmental noise to come into your ears at all times. The AirPods Pro are the model with the soft ear tips that completely close off your ear, which enables features like more powerful noise cancellation and the hearing test. Lastly, the AirPods Max are Apple’s over-ear headphones, and currently the company’s only option for wireless headphones at all that aren’t made by Beats.

There are a few features that are available across all models as they’ve become inherent to the AirPods experience. First, you can expect Automatic Switching between Apple devices that are synced with your iCloud account. This means that AirPods will automatically change to your phone when you get a call while you’re listening to music on a MacBook, for example. It’s functionally similar to multipoint Bluetooth, but the feature isn’t limited to two devices like most earbuds and headphones. Second, hands-free access to Siri is the default, allowing you to ask the assistant for help without touching your AirPods. And lastly, Personalized Spatial Audio with dynamic head tracking is available across the entire lineup, even on the most affordable version of the AirPods 4.

If you don’t think any of the AirPods options are right for you, consult our recommendations on the best wireless earbuds and best wireless headphones for some alternatives.

Other AirPods we tested

AirPods 4 with ANC

The AirPods 4 with ANC represent the first time active noise cancellation has been available on the open-wear, “regular” AirPods. Design-wise, they’re the same as the non-ANC model, so the difference is entirely in the features list. This more expensive version adds Adaptive Audio, Transparency mode, Conversation Awareness and a wireless charging case. The ANC isn’t as powerful as the AirPods Pro 2, partially due to the fact that the AirPods 4 doesn’t completely seal off your ears. The noise-canceling performance is definitely useful though, working best with constant, low-frequency annoyances like fans and white noise machines. Lastly, you won’t get access to Apple’s hearing test and hearing aid features, partially due to the fact that the AirPods 4 with ANC doesn’t seal off your ears, which would affect accuracy and effectiveness.