| Name | KEF XIO | Sonos Arc |
|---|---|---|
| Image |  |
 |
| MSRP | $2499 | $899 |
| Released | 2025 | 2020 |
| Availability | Available | Available |
| Check price: | Amazon | Sonos, Amazon |
| Speaker configuration | ||
| Audio channels | 5.1.2 | 5.0.2 |
| Expandable up to: | - | 7.1.4, (Atmos rears, 2 subs) Added subwoofers play same subwoofer channel. |
| Woofers (mid or full-range) - total | 8: 6× 50 mm Uni-Q MX Driver (3× front, 3× upfiring) 2×50mm full range (sides) | 8: 8× unknown size |
| Tweeters - total | 6: 6× unknown size, part of Uni-Q MX Driver (coaxial) | 3: 3× unknown size |
| Subwoofers | 4× P185 driver 2×7″ (built-in) | 0 |
| Audio specifications | ||
| Watts RMS | 820 W | Not specified |
| Frequency range | 34 Hz - 20 kHz | Not specified |
| DTS:X support | Yes | No |
| Dolby Atmos support? | Yes | Yes |
| Surround sound? | Virtual | Virtual |
| Other 3D audio formats? | 360 Reality Audio | None |
| Other (notable) sound features? | None | Speech Enhancement (use app) |
| Sound calibration? | Yes, Intelligent Placement Technology | Yes (Trueplay) |
| Connectivity & ports | ||
| Bluetooth | Bluetooth 5.3 | ❌ |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 4 |
| Ethernet port (RJ45) | ✔ | ✔ |
| HDMI (e)ARC out port? | 1× eARC | 1× eARC |
| HDMI in ports? (passthrough) | ❌ | ❌ |
| Optical port? (TOSLINK) | ✔ | Use included adapter: Optical to HDMI |
| 3.5 mm AUX port? | ❌ | ❌ |
| USB port? | USB-C (service only) | ❌ |
| Other audio ports | Subwoofer out | None |
| Wireless setup & control | ||
| Official app? | KEF Connect | Sonos S2 |
| Voice assistant? | Indirectly (no built-in mic) | Yes |
| Chromecast built-in? | ✔ | ❌ |
| AirPlay? | ✔ | ✔ |
| Alexa cast? | ❌ | ❌ |
| Multiroom? | ✔ | ✔ |
| Wireless subwoofer(s)? | Wired connection possible, wireless using KW2 RX Receiver | Optional: max 2 subwoofers; 2× Sonos Sub or Sub Mini |
| Wireless surrounds? | ❌ | Optional: max 2 surrounds, Era 300 for Dolby Atmos |
| Physical specifications | ||
| Speakers in set: | Soundbar | Soundbar |
| Size (cm W×H×D): | 121.0×7.0×16.5 | 114.2×8.7×11.6 |
| Size (inch W×H×D): | 47.64×2.8×6.5 | 44.96×3.43×4.57 |
| Weight (kg): | 10.5 | 6.25 |
| Weight (lbs): | 23.1 | 13.78 |
| Wall mountable? | Yes, with included wall mounting kit | Yes, with optional wall bracket |
| Color options: | Black, Silver/gray | Black, white |
| Accessories in the box | Remote, HDMI cable, wall mounting kit | HDMI cable, optical to HDMI adapter |
| More info | ||
| Model number | XIOSB | ARCG1##1 |
| User guide / manual | User manual | User Guide |
| Official site link | Kef.com | Sonos.com |
| Check price & reviews | ||
| See price and reviews: | Amazon | Sonos, Amazon |
KEF XIO vs Sonos Arc
Legend:
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Good
Not good
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