Samsung HW-Q990H vs Sonos Arc Ultra: which Dolby Atmos soundbar is better?

Soundbars tend to come in two flavours now: the usual standalone bar, and the soundbar system with extra speakers that has increased in visibility in recent years.

We’ve rounded up two of our favourites from both categories to see how they stack up. And not just any two – the Award-winning Sonos Arc Ultra, and Samsung’s new HW-Q990H soundbar system.

We’ll go through various categories such as price, design, features and, of course, sound, to find out which is the better buy.

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As soundbar standoffs go, it doesn’t get much closer than this. So, after a deep breath, let’s get started…

Samsung HW-Q990H vs Sonos Arc Ultra: price

The Sonos Arc Ultra officially launched at £999 / $999 / AU$1799. However, it does get healthy discounts every now and then – the cheapest we’ve seen it go is £719 in the UK on Cyber Monday.

The Samsung HW-Q990H launched at a more expensive £1599 / $2000 / AU$1999. That’s a £600/$1000/AU$200 increase – though you have to bear in mind that this also includes a wireless subwoofer and two wireless surrounds.

You can add extra speakers to the Arc Ultra, but it quickly adds up. The cheapest way to build a Sonos system is to add a Sub Mini and two Era 100 speakers, which are available as part of the Home Cinema Completion Set for £785/$887/AU$1270, though if you shop around you can often find these products on sale separately.

The Samsung HW-Q990H is also much newer, only launching in spring 2026. Samsung’s annual soundbar system tends to tumble in price quickly and consistently after launch – the HW-Q990H is already down to £1299 in the UK. Last year’s model, the HW-990F, crashed to under £700 over Prime Day, and we’d expect the HW-Q990H to follow a similar pattern.

As things stand, the Sonos Arc Ultra is the better value buy, especially if you get it at a discount – but the two may very well swap places over the course of the next year.

**Winner: Sonos Arc Ultra**

Samsung HW-Q990H vs Sonos Arc Ultra: design

There is, of course, one key difference between the Samsung HW-Q990H and Sonos Arc Ultra; the Q990H is a soundbar system with surrounds and a subwoofer, whereas the Arc Ultra is a solo soundbar.

However, even the soundbar of the Q990H alone is bigger than the Arc Ultra – the Arc Ultra fits all of its channels into a 7.5 x 118 x 11 cm (hwd) bar, while the main soundbar of the Q990H comes in at 7 x 123 x 14cm. The Q990H’s surround speakers are a smaller 20 x 13 x 14cm, while the subwoofer is a 25 x 25 x 25cm cube.

The Q990H is a well-built, premium-feeling system constructed from aluminium and high-quality plastic. However, the design is identical to previous Samsung soundbar systems, and is starting to feel a little tired. The sharp, hexagonal design is a touch brutalist – especially compared to Samsung’s sleek OLED TVs – and the edgy soundbar does feel at odds with the rounded cube-shaped subwoofer.

We prefer the smooth curves of the Sonos Arc Ultra. The solo soundbar is pretty much all grille, with just a Sonos logo and a status light breaking up the appearance from the front, ensuring that sound can emanate from the soundbar in almost any direction.

The Arc Ultra’s design is largely similar to that of its predecessor, the Sonos Arc, with the exception of the 'ledge' at the back of the top of the chassis, which now houses touch controls for playback and volume. The Bluetooth pairing button is hidden in the recess around the back with the HDMI and power ports, which is a tad inconvenient.

The Sonos Arc Ultra gets our vote on an aesthetic level, but we still have features and sound quality to assess.

**Winner: Sonos Arc Ultra**

Samsung HW-Q990H vs Sonos Arc Ultra: features

The Arc Ultra boasts a 9.1.4-channel configuration, with 15 Class D amplifiers powering 14 drivers that are all Sonos-engineered. There are seven tweeters, six midrange woofers, and a 'Sound Motion' woofer, and it's the last of those that's the really big deal.

Rather than the one heavy motor that most speaker drivers employ, the Sound Motion driver has four smaller, lightweight motors in opposing corners. Working together, these motors are apparently able to push the cone to shift far more air and produce far more bass.

The Samsung, on the other hand, is an 11.1.4 system, with an impressive total of 23 individual drivers on board. This includes 15 drivers in the main soundbar unit, three in each of the wireless surround speakers, and two 8-inch woofers (in a push/pull configuration) in the wireless subwoofer. Upward-firing drivers are present in both the soundbar and surround speakers for immersive audio.

Speaking of immersive sound formats, the Sonos Arc Ultra only supports Dolby Atmos. The Q990H boasts three: Dolby Atmos, DTS:X and Samsung’s Eclipsa Audio. Eclipsa has not seen widespread coverage outside of YouTube so far, but it’s handy that the Q990H is futureproofed should this change down the line.

While the Sonos Arc Ultra does have an HDMI eARC output for sending high-fidelity sound from your TV, there are no HDMI inputs to enable passthrough, which could be an issue for any gamers out there. If you have a TV with only two HDMI sockets and more than one game console, you’ll be in a bit of a pickle as the Arc Ultra will take up one of your ports.

The Samsung, on the other hand, has two full-bandwidth HDMI 2.1 passthrough sockets, which support up to 4K/120Hz signals with VRR and ALLM, as well as HDR10, HDR10+ and Dolby Vision. So you can plug two high-speed game consoles directly into the soundbar itself, and still enjoy plenty of gaming features.

The Sonos Trueplay calibration process for the Arc Ultra comes in two flavours – Quick and Advanced. The Quick method, which is a single measurement using the soundbar’s own microphone, makes a big difference, whereas the iOS-only Advanced method, the ‘hoovering-the-walls’ method we’ve seen before, only very slightly improves beyond that.

Samsung’s SpaceFit Sound Pro feature, which is essentially the Q990H’s’s calibration system, can helpfully accommodate if you can’t place the rear speakers at the recommended 135-150-degree angle behind the listening position. However, this isn’t just a one-time measurement – the feature is a constantly running system that monitors your listening space at all times to make adjustments in real time.

The Sonos app also allows you to access EQ controls and features such as Night mode, Speech Enhancement and the Loudness setting. However, we ran into several bugs during testing, and while a lot of the issues have been ironed out, it’s still not the most intuitive platform.

Luckily, you shouldn’t need to use the app too often – the remote control can handle most duties, and music can be sent directly from apps such as Spotify and Tidal.

Conversely, we find the Samsung SmartThings app to be the preferred way of interacting with the settings menus of the Q990H. The app has a snappy connection and set-up time, with easy-to-understand menus and generally solid stability.

The Q990H can also be connected wirelessly to compatible Samsung TVs, though we’d recommend sticking to a wired connection for the best audio quality and reduced latency. Q Symphony is also on offer, in which the Q990H can work in tandem with the speakers of a Samsung TV – though again, we’d recommend just sticking to the system rather than bringing a TV's sound quality into the equation.

Finally, the Q990H offers a Sound Elevation feature that’s designed to raise the audio upwards to match the position of your screen. We found it overshot things slightly and placed the sound towards the top of our TV, but this could be useful for those who wall-mount their TV and leave a gap between it and their soundbar.

The Sonos Arc Ultra is no slouch in the features department, but it loses out to the newer, feature-packed Samsung HW-Q990H. The soundbar system boasts more immersive audio support, a snappier, more stable app and, crucially, HDMI passthrough.

**Winner: Samsung HW-Q990H**

Samsung HW-Q990H vs Sonos Arc Ultra: sound

Starting with the Samsung HW-Q990H and a test viewing of Civil War, we find this soundbar package excels in practically every aspect. A woodland scene demonstrates the soundbar’s excellent placement of cinematic effects, with birds chirping overhead and twigs crackling underfoot.

Vocal clarity is excellent, with crisp, detailed and full-bodied dialogue, and the tonality and emotions of their voices are captured thanks to the Q990H's rich sonic characteristics and deft handling of low-level dynamics.

Bass is handled very well too, refusing to distort or warble during Blade Runner 2049’s infamously tricky chapter two. In fact, the bass builds nicely throughout, with a sense of tonal variation which makes it sound tuneful and dynamic.

K’s crowded apartment complex and a dystopian street are also captured with a level of finesse and detail that seriously sells the atmosphere of each scene. Background sounds are also cleverly woven into the soundfield without making them sound forced or intentionally singled out.

Moving on to music, we try the Q990H’s Standard mode, which removes the rear speakers and lets the main soundbar unit and subwoofer shine for stereo music reproduction.

Most, if not all, of the positive attributes from our movie testing are present and correct for music, too – vocals are warm and detailed, bass is taut, and there is a general sense of naturalism and balance to the sound. The Samsung system is a talented performer – but can’t quite top the Sonos when it comes to music.

Sonos soundbars have long been among the most musical in the category, though, and the Arc Ultra further solidifies that reputation. We prefer it over the Samsung system thanks to its richer, more rounded and smoother sound – the Arc Ultra is an energetic, exciting and engaging listen, and a crackingly musical soundbar.

Moving away from music, we also put the Arc Ultra through the Blade Runner 2049 chapter two test, and it also impresses. There’s no chuffing from the drivers and it has a really good go at the super-deep notes of the soundtrack. Bottom-end control isn’t cast iron, but the combination of weight and control is impressive.

The spatial sound-effect placement is also quite impressive for a solo bar. Voices and other audio are placed above us, in the top corners of the room and move around us, far beyond the extremities of the TV.

The sound is detailed too – incidental noises are delivered clearly and cleanly without distracting, with the Arc Ultra’s low-level dynamic subtlety ensuring these sounds are presented naturally and realistically. Grand changes in volume are also dispatched without fuss or fluster, with the solo soundbar capable of going very loud indeed.

So who comes out on top? Well, it depends entirely on what you plan to use the soundbars for. The Sonos Arc Ultra is a musical powerhouse and manages to pack in impressive detail and spatial effects into one convenient, plug-in-and-play bar.

The Samsung HW-Q990H, on the other hand, requires a bit more setup and space, but really benefits from the rear speakers for surround and height effects, as well as the rather impressive subwoofer.

It really depends on which soundbar is the best for you and your needs – both products excel in their respective areas, so we’re going to call this one a draw.

**Winner: Draw**

Samsung HW-Q990H vs Sonos Arc Ultra: verdict

As soundbar battles go, it doesn’t get much closer than this. There’s no wrong answer here really, with two top-tier home cinema audio options.

The Sonos Arc Ultra is better looking and is the go-to choice if you want just one box that excels with music and movies. The Samsung HW-Q990H is stuffed with features, including the all-important HDMI 2.1 inputs for gamers.

The Arc Ultra is also cheaper at the time of writing, but the HW-Q990H will inevitably fall to a similar, if not cheaper, price by next year.

If you’ve got the space for a multi-speaker system, then the HW-Q990H is an easy recommendation. But if you’re after the convenience of a single soundbar, then the Sonos Arc Ultra will serve you extremely well.

** Overall Winner: Draw**

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