The KEF LSX II redefines compact wireless hi‑fi audio, delivering powerful, room-filling sound from a stylish bookshelf-sized package. Featuring KEF’s renowned Uni-Q® driver array, it produces precise imaging, a wide soundstage, and balanced tonal clarity, making every instrument and vocal come alive. These speakers are fully wireless and support advanced streaming standards including AirPlay 2, Google Cast, Bluetooth 5.0, and Roon Ready, allowing seamless high-resolution playback from virtually any device. Compact yet powerful, the LSX II integrates multiple digital and analog inputs — HDMI ARC, optical, USB‑C, and analog 3.5 mm — for maximum connectivity with TVs, computers, and music sources. With intuitive control via the KEF Control app and full compatibility with smart home automation systems, the LSX II combines convenience, style, and audiophile-grade sound in a single elegant package.
Features
- Uni-Q® Driver Array – HF: 19 mm aluminium dome. LF/MF: 115 mm magnesium/aluminium cone. Delivers detailed, coherent sound with wide dispersion and precise imaging.
- Advanced Wireless Connectivity – Supports Wi‑Fi dual-band (2.4/5 GHz), Bluetooth 5.0, AirPlay 2, Google Cast, and Roon Ready for seamless streaming.
- High-Resolution Audio Support – Plays up to 384 kHz/24-bit over network, 192 kHz/24-bit via USB‑C, and up to 96 kHz/24-bit via optical, ensuring every nuance of your music is preserved.
- Versatile Inputs and Outputs – HDMI ARC, TOSLINK optical, USB‑C, 3.5 mm analog, and RJ45 Ethernet; includes RCA subwoofer output and both wireless and wired interspeaker connections.
- Compact and Stylish Design – Small footprint of 240 × 155 × 180 mm, finished in sleek black, fits easily on bookshelves or desktops while complementing modern interiors.
- Amplifier Power – Per speaker: LF 70 W, HF 30 W, Class D, delivering clear highs, rich mids, and deep bass with maximum SPL of 102 dB.
- Smart Home Ready – Compatible with Elan, RTi, Crestron Home, Savant, and Control4 systems for easy integration into automated setups.
- Wide Format Support – Compatible with MQA, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM, and Ogg Vorbis for versatile playback.
- Energy Efficient – Consumes 200 W during operation and less than 2 W in standby, combining high performance with energy savings.
Specifications
| Specification | Details |
| Model | LSX II |
| Amplifier Output | LF: 70W, HF: 30W (per speaker) |
| Amplifier Class | LF: Class D, HF: Class D (per speaker) |
| Drive Units | Uni-Q driver array:HF: 19 mm (0.75 in.) aluminium domeLF/MF: 115 mm (4.5 in.) magnesium/aluminium alloy cone (per speaker) |
| Frequency Range | 49 Hz – 47 kHz (depends on EQ settings) |
| Frequency Response (±3dB) | 54 Hz – 28 kHz, measured at 85 dB/1m |
| Maximum SPL | 102 dB |
| Wi‑Fi Network Frequency Band | Dual-band 2.4 GHz / 5 GHz |
| Wi‑Fi Network Standard | IEEE 802.11a/b/g/n/ac, IPv4, IPv6 |
| Primary Speaker Inputs | HDMI ARC, TOSLINK Optical, USB Type C, Analog 3.5 mm Aux, RJ45 Ethernet (network & interspeaker) |
| Secondary Speaker Inputs | RJ45 Ethernet (interspeaker) |
| Outputs | RCA Subwoofer output |
| Interspeaker Connection | Wireless: all sources resampled to 48 kHz/24-bit PCMWired: all sources resampled to 96 kHz/24-bit PCM |
| Source Resolution | Network up to 384 kHz/24-bitOptical up to 96 kHz/24-bitUSB Type C up to 192 kHz/24-bitHDMI up to 1.411 Mbps PCM (depends on source resolution) |
| Supported Formats | MQA, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM, Ogg Vorbis |
| Wireless Streaming Features | AirPlay 2, Google Cast, Roon Ready, UPnP, Bluetooth 5.0, Plays with Audirvāna |
| Streaming Services | Spotify (Spotify Connect), Tidal (Tidal Connect), Amazon Music, Qobuz, Deezer, QQ Music (Qplay), Internet Radio, Podcast (depends on availability) |
| Power Input | 100 – 240 VAC, 50/60 Hz |
| Power Consumption | 200 W (operating), <2.0 W (standby) |
| Dimensions (H × W × D) | 240 × 155 × 180 mm (9.5 × 6.1 × 7.1 in.) |
| Weight | 7.2 kg (15.6 lbs) per speaker, net weight per set noted |
| Home Automation System Compatibility | Elan, RTi, Crestron Home, Savant, Control4 |
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