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KEF LSX II Wireless HiFi System (LSX2), Carbon Black - As Traded
Condition: Used. Fair, scratches to front of both speakers, dent to driver (See photos)
Includes: Remote, Ethernet Cable, Power Cables (No Box)
SN: LSX2G55183S50R1G / LSX2G55183S50L1G
Warranty: 90 days (3 months)
Overview
The KEF LSX II Wireless HiFi Speaker System, perfect for desktop and nearfield listening, combines KEF’s 11th-generation Uni-Q® driver array with their advanced Music Integrity Engine. Each speaker offers dedicated Class D amplification, with 70W for bass and 30W powering the tweeter, allowing output levels up to 102dB.
Built around KEF’s W2 wireless platform, the LSX II provides extensive streaming capability, supporting AirPlay 2, Chromecast, Bluetooth, Wi-Fi, Spotify Connect, Tidal Connect, and Roon. Inputs include HDMI ARC for television integration, USB-C for computers, analogue input (3.5mm stereo plug only) for traditional sources, and a dedicated subwoofer output for enhanced low-frequency performance.
The KEF Connect app provides full control over source selection, volume, EQ, and room-placement optimisation, allowing the system to be tailored to a variety of listening environments.
Design by renowned industrial designer Michael Young.
• Wireless streaming including Airplay 2, Chromecast, Bluetooth, WiFi
• Plays all major music services and supports all major audio formats
• DSD, MQA and PCM up to 24bit/384kHz
• Comprehensive connectivity for your TV, laptop and any other equipment: USB-C, HDMI ARC, Analogue input, subwoofer output
• 11th Generation Uni-Q® driver array for accurate, pristine sound
• Music Integrity Engine for rich, full-bodied sound
• System power: LF 70W class D, HF 30W class D, Max. SPL:102dB
• Intuitive on-boarding with user-centred features
• Personalised listening experience via KEF Connect App
• Design by Michael Young
• Optimised cabinet design for best acoustic performance
• Mounting inserts to secure on accessories including P1 desk pad, S1 floor stand and B1 wall bracket
Specification
Drive units (per speaker): Uni-Q driver array:
HF: 19mm (0.75in.) aluminium dome
LF/MF: 115mm (4.5in.) magnesium/aluminium alloy cone
Frequency range (-6dB) measured at 85dB/1m: 49Hz – 47kHz* Depends on EQ settings
Frequency response (±3dB) measured at 85dB/1m: 54Hz – 28kHz * Depends on EQ settings
Amplifier output power (per speaker): LF: 70W, HF: 30W
Amplifier class (per speaker): LF: Class D, HF: Class D
Max SPL measured at 1m: 102 dB
Wireless streaming features:
AirPlay 2
Google Chromecast
Roon Ready
UPnP Compatible
Bluetooth 5.0
Plays with Audirvāna
Streaming services
Spotify via Spotify Connect
Tidal via Tidal Connect
Amazon Music
Qobuz
Deezer
QQ Music via QPlay
Internet Radio
Podcast
*Depends on services availability in different countries
Source resolution:
Network up to 384kHz/24bit
Optical up to 96kHz/24bit
USB Type C up to 192kHz/24bit
HDMI up to 1.411Mbps PCM
*Depends on source resolution
Interspeaker connection
Wireless: all sources resampled to 48kHz/24bit PCM
Wired: all sources resampled to 96kHz/24bit PCM
Supported format (network):
MQA^, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM and Ogg Vorbis
Home Automation System
Elan, RTi, Crestron Home, Savant, Control4
Dimensions (HWD per speaker): 240 × 155 × 180 mm
Weight (per set): 7.2kg
Power input: 100 – 240VAC 50/60Hz
Power consumption: 200W (operating power),
Generating expert take…
KEF traces its roots to 1961, when British engineer Raymond Cooke founded the company in a modest Nissen hut on the grounds of the Kent Engineering and Foundry in Maidstone, England. A former BBC engineer and Wharfedale veteran, Cooke was driven by a passion for music and a commitment to technological innovation, aiming to reproduce sound as faithfully as the original performance. From its inception, KEF pioneered materials like foil-stiffened polystyrene diaphragms and Melinex tweeters in its debut K1 loudspeaker, setting a benchmark for engineering precision that propelled the brand to early acclaim.
KEF has long specialized in loudspeakers, establishing itself as a leader with iconic innovations such as the Uni-Q coaxial driver and computer-aided design techniques that revolutionized driver and enclosure development. While drive units supplied to other manufacturers fueled its growth, the brand's core output remains high-fidelity speakers across categories like floorstanders, bookshelves, and home theater systems, including early THX-approved setups. Active wireless models and reference-grade series extend its portfolio, though it eschews amplifiers, turntables, DACs, headphones, or cables.
Renowned for its science-driven heritage, KEF occupies a premium position in the hi-fi market, blending accessible high-end performance with cutting-edge technology. Collectors prize vintage BBC monitors and Bextrene-driver classics, while modern buyers seek its precise, natural soundstaging. Decades of awards affirm KEF's status as a respected innovator, appealing to discerning audiophiles who value engineering over hype.
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