Sonos Arc Ultra Review: A Flagship Soundbar That Fills the Room Without a Sub
The Sonos Arc Ultra is the soundbar to buy when you want one piece to deliver a large, immersive Dolby Atmos experience without adding a separate subwoofer. Owners consistently single out its room-filling scale, deep bass and crystal-clear dialogue, and the Sonos app makes setup quick. The trade-offs are its premium price, the lack of a remote in the box (you use your TV's or the app), and a bundled HDMI cable some buyers replaced to cure audio dropouts. For anyone already in the Sonos ecosystem, or after a one-and-done home theater upgrade, it is a convincing flagship.
- Owners of large and mid-sized living rooms
- Movie and Dolby Atmos fans
- Sonos multi-room builders
- Buyers who want big sound without a separate sub
Pros
- Immersive 9.1.4 Dolby Atmos with convincing height and surround
- Deep, room-filling bass that owners say can stand in for a separate sub
- Exceptionally clear dialogue with AI Speech Enhancement and a Night Sound mode
- Quick guided setup over HDMI eARC through the Sonos app
- Deep Sonos ecosystem: add a Sub and Era surrounds, or group rooms
- Alexa, Sonos Voice Control and AirPlay 2 built in, plus Google Home, SmartThings and Home Assistant support
Cons
- Premium price; owners suggest waiting for a sale
- No remote of its own, it uses the TV remote or the app
- The bundled HDMI cable drew complaints for audio dropouts
- Trueplay room tuning needs a phone and results can vary by device
- No 3.5mm line-in and no HDMI pass-through inputs
- Google Assistant and Siri are not built in
Who is the Sonos Arc Ultra for?
The Arc Ultra is Sonos's flagship soundbar, a long, low-profile bar built for large TVs and for viewers who want cinematic sound from a single cabinet. At almost 1.2 metres wide it suits big screens and rooms where a full separates system is too much, and its deep, punchy bass means many owners skip a separate subwoofer entirely. It is the natural centrepiece for the Sonos ecosystem: add a Sub and a pair of Era surrounds for a full surround system, or group it with other Sonos speakers for whole-home audio. It is aimed at buyers who value sound quality and a tidy setup over the lowest price, and who are comfortable running a system through an app.
What buyers love
The most repeated praise is scale: owners describe the Arc Ultra filling the room far beyond its size, with a convincing Dolby Atmos bubble that places effects around and above the listener rather than just across the front. Dialogue gets near-universal credit, with the Speech Enhancement processing keeping whispered lines intelligible during action scenes, and the Night Sound mode being called out as genuinely useful for late viewing. Bass is a theme too, with several buyers saying the bar alone has enough low end that a subwoofer can wait. Setup is described as quick and guided through the Sonos app over HDMI eARC, the TV remote controls it without a second remote, and owners who already run Sonos gear praise how cleanly it slots into their system. Music playback and the Trueplay room tuning also draw positive notes, as does the matte finish, which blends into a living room.
What to know before you buy
There is no remote in the box, so the Arc Ultra is driven by your TV remote, the app or voice, which is fine for most owners but worth knowing. A recurring complaint is the bundled HDMI cable: at least one buyer traced random audio dropouts to it and fixed them by swapping in a certified high-speed cable, so a spare cable is a cheap safeguard. Trueplay tuning runs through a phone microphone and results can vary by device. The bar is premium-priced and several owners suggest waiting for a sale, since the value case shifts a lot at a discount. It has no 3.5mm line-in and no HDMI pass-through inputs, so external devices connect to the TV rather than through the bar, and only Alexa and Sonos Voice Control are built in, not Google Assistant or Siri.
Is the Sonos Arc Ultra worth it?
For a large-room home theater where a single bar has to do the heavy lifting, buyer feedback is strongly positive, and those who upgraded from smaller bars or older systems describe the jump as transformative. The soundbar rewards a good source and a well-placed room, and it becomes more convincing still once a Sub and surrounds are added. It is a premium purchase, and buyers on a budget or with small rooms may find a cheaper Sonos bar or a compact competitor covers their needs. As a flagship centrepiece that works alone and expands cleanly into a full Sonos system, it earns its price for the buyers it targets.
Frequently asked questions
Does the Sonos Arc Ultra need a separate subwoofer?
No. Owners regularly report that the bar alone delivers deep, room-filling bass, and several skip a sub entirely. A Sonos Sub adds even more low-end authority if you want it.
Does the Sonos Arc Ultra come with a remote?
No, there is no remote in the box. It is controlled with your existing TV remote over HDMI eARC, through the Sonos app, or by voice, and it works with the TV remote without extra setup.
What voice assistants does the Arc Ultra support?
Amazon Alexa and Sonos Voice Control are built in. Google Assistant and Apple Siri are not built in, and Apple devices connect through AirPlay 2.
Does the Sonos Arc Ultra work with Google Home, Apple Home, SmartThings and Home Assistant?
Yes. It works with Google Home, Samsung SmartThings and Home Assistant, and AirPlay 2 brings it into Apple Home. Alexa is the built-in assistant.
Can I add more speakers to the Sonos Arc Ultra later?
Yes. You can add a Sonos Sub and a pair of Era speakers for surround sound, and group the bar with other Sonos speakers for multi-room audio.
How do I connect the Sonos Arc Ultra to my TV?
It connects over HDMI eARC or ARC with the included HDMI cable. If your TV only has an optical output, a Sonos optical audio adapter is sold separately.
