KEF LSX II Wireless HiFi Speakers (Pair)

Serious HiFi Sound in a Compact, Connected System

The KEF LSX II Wireless HiFi Speakers bring genuine stereo imaging, built-in amplification, high-resolution streaming, and flexible everyday connectivity into a compact system designed for modern listening spaces.

Rather than relying on one enclosure to reproduce both left and right channels, the LSX II uses two independently powered speakers to create a true stereo soundstage. Vocals appear naturally centered, instruments occupy distinct positions, and music gains the width and depth that compact all-in-one speakers and conventional soundbars often struggle to reproduce.

The system can stream directly from popular music platforms, connect to a television through HDMI ARC, play audio from a computer over USB-C, and accommodate additional digital or analog sources. Because amplification, processing, streaming, and speaker engineering are already integrated, the LSX II offers a straightforward path to high-quality sound without requiring a separate amplifier, DAC, or network streamer.

Its small footprint makes it equally at home on a desktop, bookshelf, media console, or dedicated stand, making the LSX II an appealing choice for apartments, bedrooms, home offices, and smaller living spaces.

Key Features at a Glance

• Complete powered wireless stereo speaker system

• KEF Uni-Q® driver array for precise imaging and broad sound dispersion

• 200 watts of total built-in amplification

• Network playback up to 24-bit/384kHz

• HDMI ARC for direct television connection

• USB-C input for computers and compatible devices

• Optical digital and 3.5mm analog inputs

• Apple AirPlay 2 and Google Cast

• Spotify Connect and TIDAL Connect

• Roon Ready and UPnP compatible

• Bluetooth 5.0

• KEF Connect app with room-based sound adjustment

• Wireless or wired communication between the speakers

• Dedicated RCA subwoofer output

• Compact enough for desktops, shelves, stands, and wall mounting

KEF lists 70 watts for the low/mid-frequency section and 30 watts for the tweeter in each speaker, giving the pair 200 watts of total system amplification.

Expansive Stereo Sound from a Compact Pair

The LSX II is designed for listeners who want more than background audio but do not have the space—or the desire—for a large component system.

Because the speakers are physically separated, the LSX II can create a genuine stereo image that extends across the front of the room. Voices remain focused between the speakers, instruments are easier to locate, and recordings gain a more convincing sense of depth and scale.

Its compact cabinets may be visually understated, but the presentation is not confined to the dimensions of the speakers. Properly positioned, the LSX II produces a broad and involving soundstage that works especially well for vocal recordings, acoustic music, jazz, pop, electronic music, gaming, and television.

KEF specifies a maximum output of 102dB measured at one meter, giving the system enough headroom for nearfield listening and most small-to-medium residential spaces.

Hear More from Every Seat 

At the heart of each LSX II is KEF’s Uni-Q® driver array, which places the tweeter at the acoustic center of the midrange and bass cone.

This arrangement helps sound radiate more evenly throughout the room than a conventional driver layout. The practical benefit is a wider listening area, more stable imaging, and greater consistency when you are not seated in one narrowly defined position.

The LSX II uses a 19mm aluminum-dome tweeter and a 115mm magnesium-aluminum alloy low/mid-frequency cone in each speaker. Rather than emphasizing those components individually, KEF’s digital processing and amplification coordinate them as a unified system, helping vocals and instruments sound coherent and naturally balanced.

Intelligent Processing Without Added Complexity 

KEF’s Music Integrity Engine® manages the interaction among the drivers, amplifiers, crossover, and digital signal processing.

Its role is not to add artificial effects, but to help the compact system maintain accurate timing, tonal balance, and controlled performance across different listening levels. Because KEF designs both the hardware and the processing, the LSX II avoids much of the component matching required by a conventional passive-speaker system.

The KEF Connect app guides users through setup and provides sound-adjustment controls for speaker placement and room conditions. This allows the LSX II to be adapted for a desktop, open shelf, media console, or stand-mounted installation without requiring external room-correction hardware.

High-Resolution Streaming Made Easy 

The LSX II is built around KEF’s W2 wireless platform and supports network playback at resolutions up to 24-bit/384kHz.

Compatible wireless features and services include:

• Apple AirPlay 2

• Google Cast

• Spotify Connect

• TIDAL Connect

• Amazon Music

• Qobuz

• Deezer

• QQ Music through QPlay

• Internet radio

• Podcasts

• Roon Ready

• UPnP

• Audirvāna compatibility

• Bluetooth 5.0

Supported network formats include MQA-compatible content, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM, and Ogg Vorbis. Availability of individual services can vary by country.

This broad support allows the LSX II to work with both casual streaming and more carefully curated high-resolution music libraries.

Built for Music, Television, and Desktop Audio

The LSX II is more versatile than a conventional wireless music speaker.

Its HDMI ARC input allows it to connect directly to a compatible television, providing true stereo separation, clearer dialogue, and a broader presentation than built-in TV speakers. The system does not decode immersive surround formats like a multichannel soundbar, but it offers a more natural two-channel experience for customers who prioritize music quality as much as television audio.

A USB-C input supports direct digital playback from compatible computers and devices at resolutions up to 24-bit/192kHz. This makes the LSX II especially attractive as a premium desktop system for working, gaming, editing, and focused music listening.

The optical input supports additional digital sources, while the 3.5mm analog input can accommodate a line-level component. A turntable can also be used when paired with a built-in or external phono preamplifier.

Flexible Speaker Placement

The LSX II can be placed on furniture, positioned on a desktop, mounted on compatible walls, or paired with dedicated KEF accessories.

Its compact dimensions—9.5 inches high, 6.1 inches wide, and 7.1 inches deep per speaker—make it easy to integrate into spaces that cannot accommodate full-size bookshelf or floorstanding speakers. The stereo pair weighs 15.6 pounds.

KEF offers the optional S1 Floor Stand and P1 Desk Pad for installations requiring more deliberate positioning and isolation. The speakers can communicate wirelessly, or they can be linked with the supplied interspeaker cable when a wired connection is preferred.

Wireless interspeaker playback is resampled to 24-bit/48kHz PCM, while the wired connection supports resampling up to 24-bit/96kHz PCM.

Add Deeper Bass When You Need It 

The LSX II is designed to provide balanced bass from a very compact enclosure, with a stated frequency response of 54Hz to 28kHz at ±3dB, depending on EQ settings.

For desktop listening, bedrooms, offices, and smaller living rooms, that may be entirely sufficient. Listeners who enjoy bass-heavy music, cinematic content, or higher playback levels can add a powered subwoofer through the dedicated RCA output.

The KEF Connect app includes settings that help integrate a subwoofer with the main speakers, allowing the LSX II to concentrate on the frequencies it reproduces most effectively while the subwoofer handles deeper low-frequency information

Designed to Fit Your Style 

The LSX II combines rounded surfaces, compact proportions, and understated controls to create a system that feels equally appropriate in a living room, office, or bedroom.

Current U.S. finishes include:

• Amber Haze – A warm, expressive option with strong visual character

• Cotton White – Clean and contemporary

• Carbon Black – Understated and versatile

• Soundwave by Terence Conran – A distinctive designer treatment

The finish selection allows the LSX II either to blend quietly into a room or become a deliberate design element.

Connectivity and Compatibility 

Wired Inputs

• HDMI ARC

• TOSLINK optical

• USB Type-C

• 3.5mm analog auxiliary input

• RJ45 Ethernet for network connection

• RJ45 Ethernet for wired interspeaker connection

Wireless Connectivity

• Dual-band Wi-Fi, 2.4GHz and 5GHz

• Apple AirPlay 2

• Google Cast

• Roon Ready

• UPnP

• Bluetooth 5.0

Output

• RCA subwoofer output

Smart-Home Integration

KEF lists compatibility with:

• Control4

• Crestron Home

• Savant

• Elan

• RTI

The LSX II supports Wi-Fi standards through IEEE 802.11ac and both IPv4 and IPv6 networking.

Who Is the KEF LSX II For?

The LSX II is an excellent choice for customers who want meaningful stereo performance without building a traditional stack of audio components.

It is particularly well suited to:

• Desktop and home-office listening

• Bedrooms, apartments, and smaller living rooms

• Music lovers seeking a compact all-in-one system

• Customers replacing a basic Bluetooth speaker

• TV viewers who prefer real stereo speakers to a soundbar

• Computer users who want premium USB audio

• Roon, AirPlay 2, Google Cast, Spotify, and TIDAL users

• Listeners who may add a subwoofer later

• Design-conscious buyers with limited space

RockOnAV’s Take

The KEF LSX II is one of the most versatile ways to bring genuine stereo HiFi into a space where a full-size component system would be impractical.

Its compact dimensions make it easy to place, but its real strength lies in how complete the system feels. Network streaming, HDMI ARC, USB-C, optical and analog inputs, app-based sound adjustment, and optional subwoofer expansion allow it to serve as a music system, premium desktop setup, and television audio solution without requiring multiple boxes.

The LSX II will not deliver the scale or bass authority of KEF’s larger wireless systems, but that is not its purpose. It is designed to provide refined, spacious, and engaging stereo sound in a compact form—and it does so with considerably greater flexibility than a typical pair of powered desktop speakers.

For customers who want excellent sound, straightforward operation, and broad connectivity without giving up valuable room space, the KEF LSX II is an especially compelling all-in-one system.