The Sonos Arc Ultra is a premium soundbar with 9.1.4 channels of Dolby Atmos spatial audio. It uses Sound Motion technology to fill the room with precise, immersive sound. The soundbar has 13 speakers and drivers (including a built in subwoofer), AI powered dialogue enhancement (Voice Clarity), and multiple control options (TV remote, Sonos app, touch controls, Sonos Voice, Amazon Alexa). Setup is via HDMI eARC to the TV, with step by step guidance in the Sonos app. Trueplay tuning automatically adjusts the sound to your room‘s acoustics. The Arc Ultra can be expanded with a Sonos Sub and Era 300 rear speakers for a complete surround sound system. The Amazon listing has a 4.5 out of 5 star rating (587 reviews). This review covers the specifications, sound quality, setup, expansion options and how it compares to the original Sonos Arc.
Key Specifications Of The Sonos Arc Ultra
| Feature | Specification |
|---|---|
| Channels | 9.1.4 (Dolby Atmos) |
| Speakers | 13 total (including built in subwoofer) |
| Audio Technology | Sound Motion (fills room, precise placement) |
| Dialogue Enhancement | AI powered Voice Clarity (detects human speech) |
| Connectivity | HDMI eARC, Wi‑Fi, Bluetooth, Apple AirPlay 2, Spotify Connect |
| Voice Assistants | Sonos Voice, Amazon Alexa |
| Control Methods | TV remote, Sonos app, touch controls, voice |
| Room Tuning | Trueplay (automatic acoustic adjustment) |
| Expansion | Sonos Sub, Era 300 rear speakers (for 9.1.4 surround) |
| Design | Elegant, low profile, does not distract from screen |
| Color | Black, White |
| Price | Not listed (Amazon states no featured offers) |
The Arc Ultra does not come with a physical remote. You use your TV remote, the Sonos app or voice commands.
Sound Quality And Dolby Atmos Performance
The Arc Ultra delivers a 9.1.4 channel Dolby Atmos experience. Sound Motion technology places audio precisely around the room. Dialogue is crystal clear thanks to AI powered Voice Clarity (detects human speech and enhances it). The built in subwoofer provides solid bass for a soundbar (enough for small to medium rooms). For larger rooms, adding a separate Sonos Sub is recommended.
Customer feedback on sound
- “The best sounding sound bar I have ever heard bar‑none.” – 5 stars
- “Dolby Atmos performance is excellent—clear dialogue, powerful bass, and immersive surround effects.” – 5 stars
- “The soundstage is wide and well‑defined, making both Dolby Atmos movies and regular TV in 5.1 sound rich and immersive.” – 5 stars
Setup And Connectivity
Setup is straightforward via HDMI eARC connection to the TV. The Sonos app provides step by step guidance.
| Setup Step | Description |
|---|---|
| 1 | Connect Arc Ultra to TV via HDMI eARC |
| 2 | Download Sonos app |
| 3 | Follow app instructions to add device |
| 4 | Run Trueplay tuning (automatic room calibration) |
| 5 | Pair with other Sonos speakers (optional) |
Connectivity options
- HDMI eARC (primary connection to TV)
- Wi‑Fi (for streaming and multi‑room audio)
- Bluetooth (direct streaming from phone)
- Apple AirPlay 2
- Spotify Connect
The soundbar has only one HDMI port (eARC). If you have multiple components (game console, Blu‑ray player), you connect them to the TV, and the TV sends audio to the Arc Ultra via eARC.
Expansion Options: Sonos Sub And Era 300 Surrounds
The Arc Ultra can be expanded into a full 9.1.4 surround sound system.
| Component | Function | Recommended For |
|---|---|---|
| Sonos Arc Ultra (alone) | 9.1.4 soundbar | Small to medium rooms |
| + Sonos Sub | Adds deep bass | Medium to large rooms, movies |
| + Era 300 (2x) | Rear surround speakers | Ultimate Dolby Atmos experience |
Customer feedback: “With the Arc ultra we use their Sub and two of the Sonos Era 300 atmos surrounds for movies. Scares the heck out of my wife when lightning goes off in a film.”
Sonos Arc Ultra Vs Sonos Arc (Gen 1)
| Aspect | Arc Ultra | Arc (Gen 1) |
|---|---|---|
| Channels | 9.1.4 | 5.0.2 (with Sub) |
| Speakers | 13 | 11 |
| Sound Motion Technology | Yes | No |
| AI Dialogue Enhancement | Yes (Voice Clarity) | No |
| Built in Subwoofer | Yes (solid bass) | No |
| Price | Higher | Lower (now cheaper) |
The Arc Ultra is a significant upgrade over the original Arc. It has more channels (9.1.4 vs 5.0.2), more speakers, Sound Motion technology and AI dialogue enhancement.
Pros And Cons Of The Sonos Arc Ultra
Pros
- 9.1.4 Dolby Atmos (immersive spatial audio).
- Sound Motion technology fills the room with precise sound.
- AI powered Voice Clarity (crystal clear dialogue).
- Built in subwoofer provides solid bass (enough for small/medium rooms).
- Sleek, elegant design (blends with any decor).
- Trueplay tuning automatically optimizes sound for your room.
- Multiple control options (TV remote, app, touch, voice).
- Expandable with Sonos Sub and Era 300 speakers.
- 4.5/5 star rating on Amazon (587 reviews).
- Works with Alexa, Sonos Voice, AirPlay 2, Spotify Connect.
- Easy setup via HDMI eARC and Sonos app.
Cons
- Expensive (premium price).
- Only one HDMI port (no passthrough for multiple devices).
- No physical remote (must use app or TV remote).
- Optimal performance requires Sub and Era 300 surrounds (adds cost).
- Price not listed on Amazon (no featured offers).
- May be overkill for small rooms.
- Bluetooth is for streaming only (cannot connect TV via Bluetooth).
- Requires Sonos app for full functionality.
Frequently Asked Questions (FAQs)
Does the Sonos Arc Ultra have a subwoofer built in?
Yes. The Arc Ultra has a built in subwoofer that provides solid bass for small to medium rooms. For larger rooms or more impact, you can add a separate Sonos Sub.
Does the Sonos Arc Ultra come with a remote?
No. You control the Arc Ultra using your TV remote, the Sonos app, touch controls on the soundbar, or voice commands (Sonos Voice or Amazon Alexa).
