KEF Debuts Its First Soundbar, the XIO, Equipped with Dolby Atmos, DTS:X, and Uni-Q Drivers, Delivering Exceptional Audio Quality (Previously Reviewed)
The British audio brand KEF has recently launched its latest offering in the soundbar market - the KEF XIO. This high-end soundbar is designed to deliver an immersive cinematic audio experience with advanced technologies and connectivity options.
### Key Features of the KEF XIO Soundbar
The KEF XIO boasts a 5.1.2-channel configuration, powered by 12 Class-D amplifiers, offering a wide and detailed soundstage [1][4]. It features six Uni-Q MX drivers, a miniaturized version of KEF’s signature Uni-Q driver array, for pinpoint imaging, plus four P185 LF bass drivers with 'P Flex' technology for deep, resonant bass [1][2][4]. The P185 drivers use Velocity Control Technology (VECO) to minimize distortion and compression.
The soundbar also incorporates KEF’s proprietary Music Integrity Engine (MIE) for Cinema, which offers multichannel processing, virtualization, and adaptive placement to optimize sound in different room environments [1][2].
Connectivity-wise, the KEF XIO offers HDMI 2.1 eARC, Optical input, Bluetooth 5.3, USB, Wi-Fi 6, AirPlay 2, Chromecast built-in, Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer support. It supports Dolby Atmos, DTS:X, MPEG-H, and Sony 360 Reality Audio [2][3]. For those who prefer a wired subwoofer, an RCA output is available.
The KEF XIO is available in two finishes: black or silver, and it has a sleek aluminum shell with splash-proof fabric. It also comes with a KW2 RX transmitter for wireless subwoofer connection, priced at £149 / £160 / AU$280 [3][4].
### Comparison with Sennheiser Ambeo Soundbar Max
The Sennheiser Ambeo Soundbar Max, a competitor to the KEF XIO, has a price of £1999 / $1999 (previously launched at £2199 / $2500 / AU$4000). It features a 5.1.4-channel setup, more overhead channels compared to the KEF XIO, for a more expansive 3D audio experience. The Ambeo Soundbar Max is generally larger and more expensive but is still well regarded for its immersive audio performance [3][4].
| Feature | KEF XIO Soundbar | Sennheiser Ambeo Soundbar Max | |-----------------------------|------------------------------------------------|-------------------------------------------------| | **Channel Configuration** | 5.1.2 channel (Dolby Atmos, DTS:X) | 5.1.4 channel Dolby Atmos (more overhead channels) | | **Drivers** | Six Uni-Q MX drivers plus four P185 LF woofers and two full-range drivers | More drivers, typically larger array for more immersive 3D audio | | **Amplifiers** | 12 Class-D amplifiers | Typically more amplifiers, higher power output | | **Bass** | Deep 34 Hz bass, force-cancelling woofer design | Also known for very deep bass with integrated subwoofers | | **Connectivity** | HDMI 2.1 eARC (1 input), Optical, Bluetooth 5.3, Wi-Fi 6, USB | Multiple HDMI inputs (3 inputs, but HDMI 2.1 not supported) | | **Streaming & Formats** | Dolby Atmos, DTS:X, MPEG-H, Sony 360 Reality Audio, AirPlay 2, Chromecast, Spotify Connect, etc. | Similar format support, lacks some latest streaming tech | | **Adaptive Technology** | Music Integrity Engine, Intelligent Placement Technology for tuning | Advanced room calibration, but older HDMI spec | | **Physical Size & Weight** | More compact and lighter (approx. 10.5kg) | Larger and heavier | | **Price and Age** | Newer, launched 2025 | Older model (less HDMI 2.1 support), higher price |
### Summary
The KEF XIO soundbar offers state-of-the-art Hi-Fi sound quality with advanced driver technology, improved bass control, modern connectivity (including HDMI 2.1 eARC and Wi-Fi 6), and adaptive room tuning, making it a strong option for modern smart homes and high-end cinematic sound.
In contrast, the Sennheiser Ambeo Soundbar Max offers a wider channel array and more HDMI inputs but lacks HDMI 2.1 support, making it less future-proof for gaming at 4K/120Hz. The Ambeo is generally larger and more expensive but is still well regarded for its immersive audio performance.
Choosing between the two depends on your priorities — the KEF XIO excels in modern connectivity, compact design, and innovative driver technology, while the Sennheiser Ambeo Max offers a wider channel array and more HDMI inputs but is older and bulkier.
For those seeking the latest soundbar technology with excellent bass and immersive sound in a sleek package, the KEF XIO is a compelling choice. If you prioritize multiple HDMI inputs and a more established 3D sound experience, the Sennheiser Ambeo Max remains a top contender.
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- The KEF XIO soundbar, with its 5.1.2-channel configuration and six Uni-Q MX drivers, delivers a wide and detailed soundstage, offering a deal for an immersive cinematic audio experience.
- The soundbar also boasts advanced technologies, including Velocity Control Technology for minimizing distortion, and KEF's Music Integrity Engine for optimal sound in various room environments.
- In terms of connectivity, the KEF XIO provides numerous options, such as HDMI 2.1 eARC, Bluetooth 5.3, Wi-Fi 6, AirPlay 2, Chromecast built-in, Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer support, and Dolby Atmos, DTS:X, MPEG-H, and Sony 360 Reality Audio compatibility.
- For a more affordable option, you might consider the Sennheiser Ambeo Soundbar Max, which offers a wider channel array and more HDMI inputs but lacks HDMI 2.1 support, making it less future-proof for 4K/120Hz gaming.
- Subscribing to KEF's newsletter will keep you informed about the latest hi-fi, home cinema, and tech news, reviews, buying advice, and deals.
- When it comes to buying a speaker, considering the features, brands, and technology involved can help you find the perfect gadget for your audiophile needs.
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