The Ultimate Wireless HiFi
LS50 Wireless II is more than a high-performance loudspeaker; it’s the perfect all-in-one speaker system.
It reveals every detail of your favourite music, which you stream from any source thanks to wireless compatibility with AirPlay 2, Chromecast and more.
• Play all major music services and supports all major audio formats (Tidal, Spotify and more)
• Wireless both from source and between the speakers
• Comprehensive applications and connectivity
• Intuitive on-boarding with user-centred features
• Personalised listening experience via KEF Connect App
• Stream music files up to 24bit/384kHz, as well as MQA decoding and DSD256 for truly high-resolution audio playback
• Certified Roon Ready
• AirPlay 2 and Google Chromecast seamlessly connects your compatible Apple or Android device
The result of three years intensive research and development, the new KEF LS50 Wireless II is a fully active wireless stereo speaker system that delivers pristine, KEF signature sound coupled with great usability and high-performance wireless capability.
LS50 Wireless II has been built on a whole new acoustic platform, the LS50 Meta passive loudspeakers, while the brand-new wireless platform has been engineered from the ground up. Active electronics, Digital Signal Processing (DSP), wireless streaming platform and the new KEF Connect app all combine to set a new benchmark of class-leading acoustic and user experience.
All the music, all the time
The new wireless platform that sits at the digital heart of the LS50 Wireless II ensures that no matter how you like to listen to your music, you will be able to do so with the minimum of fuss and in fantastic sound quality. LS50 Wireless II gives you direct access to your favourite music services, including Spotify (via Spotify Connect), Tidal, Amazon Music, Qobuz and Deezer. You can even tune in to Internet Radio Stations and catch up on the latest podcasts through the KEF Connect app.
AirPlay 2 and Google Chromecast seamlessly connects your compatible Apple or Android device, whilst Bluetooth expands the options even further. There are also wired connections for your TV, turntable, CD player and games console, via the HDMI, analogue, optical and coaxial inputs.
LS50 Wireless II has audiophiles covered with support for streaming music files up to 24bit/384kHz, as well as MQA Decoding, DSD256, and Roon Ready. These features mean that even the experienced hi-fi enthusiast will marvel at this exceptional loudspeaker’s ability; LS50 Wireless II really does offer something to everybody.
Let you be you
Even beyond the flawless musical performance, the LS50 Wireless II speaker system is a breeze to set up, intuitive to use and offers over-the-air firmware updates for bringing you new and improved features with the minimum of fuss. You can choose to connect the speakers with the supplied cable (24bit/192kHz resolution) or wirelessly (with 24bit/96kHz resolution) for a completely clutter-free set up.
You can even select your favourite source to wake up LS50 Wireless II whenever it comes on, giving you immediate access to your favourite source. Plus, when using AirPlay 2, Chromecast or ROON you can stream to multiple speakers, so you can play music all over your house. The brand-new dedicated KEF Connect app walks you through the set-up and controls the system on a day-to-day basis, including intuitive sound settings, so you can tune LS50 Wireless II to your own personal tastes.
Most accurate, immersive sound
When it comes to physical technology, LS50 Wireless II takes its lead from KEF’s LS50 Meta passive loudspeakers. A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption Technology1 (MAT) is a highly complex maze-like structure, where each of the intricate channels efficiently absorbs a specific frequency.
When combined, the channels act as an acoustic black hole, absorbing 99% of the unwanted sound that comes from the rear of the tweeter, eliminating the resulting distortion and providing a purer, more natural sound.
KEF’s Uni-Q point source configuration delivers a more detailed, accurate and integrated three-dimensional sound image, which is dispersed so evenly throughout the room that the ‘sweet spot’ is wherever you are in the room. Using simulation and analysis tools, our engineers have developed the 12th generation Uni-Q with MAT driver array, to reduce high-frequency distortion in the mid-frequency driver.
The result is reduced coloration, less distortion and a sound that is more transparent and life-like than previously possible. The other frequencies are equally well served, with crystal clear midrange and room-filling, deep and articulate bass.
The performance of LS50 Wireless II is aided by KEF’s bespoke Music Integrity Engine, a cutting-edge collection of bespoke Digital Signal Processing algorithms optimised for the new Uni-Q with MAT driver array, enabling it to deliver a perfectly timed performance, for better imaging and a tighter, unsmeared sound.
LS50 Wireless II also has plenty of power on tap. Each tweeter benefits from being driven by a new 100W class A/B amplifier that delivers a smooth, incredibly detailed treble performance. Dedicated 280W class D amplifiers power the mid/bass drivers, for room-filling, controlled sound. The diligent amplifier development has all been undertaken in-house by KEF, in order to completely control the quality of power on offer.
The end result of this tireless effort is sensationally dynamic sound, with the music’s subtle ebb and flow delivered in all its glory
Attention to every detail
The LS50 Wireless II will also fits comfortably into your living space when it comes to style. The low- diffraction, curved baffle is precision modelled around the Uni-Q driver array, while eye-catching heat sinks and colour-matched ports are located on the well-equipped rear. LS50 Wireless II is available in three matt finishes, Carbon Black, Titanium Grey, Mineral White. All the colours are mirrored on both the drive units and the rear-facing port means the LS50 Wireless II looks fantastic from any angle.
Don’t forget the matching S2 Floor Stands
The S2 Floor Stand’s colours perfectly match the finishes of the LS50 Meta and the LS50 Wireless II wireless speaker system. They are available in: Carbon Black, Titanium Grey, and Mineral White.
Two-way bass reflex
Uni-Q Driver Array:
HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology
MF/LF: 130 mm (5.25 in.) aluminium cone
Frequency range (-6dB)
40 Hz – 47 kHz
Frequency response (±3dB)
45 Hz – 28 kHz
Amplifier output power
LF: 280W HF: 100W
LF: Class D HF: Class AB (per speaker)
Wireless streaming features
Spotify via Spotify Connect
QQ Music via QPlay
*Depends on services availability in different countries
Network up to 384kHz/24bit
Optical up to 96kHz/24bit
Coaxial up to 192kHz/24bit
HDMI up to 192kHz/24bit
*Depends on source resolution
Wireless: all sources resampled to 96kHz/24bit PCM
Wired: all sources resampled to 192kHz/24bit PCM
Supported format (all inputs)
MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis
Supported format (network)
MQA: MQA Core Decoder
DSF: DSD64, DSD128, DSD256
Dimensions (HWD per speaker)
305 x 200 x 311 mm (12 x 7.9 x 12.2 in.)
Weight (per set)
100 – 240VAC 50/60Hz
200W (operating power)
<2.0W (standby power)
Analog 3.5mm Auxiliary
USB Type A (service)
RJ45 Ethernet (network)
RJ45 Ethernet (interspeaker) x2
RCA Subwoofer output x2
Wi-Fi network standard
Wi-Fi network frequency band
Dual-band 2.4 GHz / 5 GHz
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.
KEF is a proud pioneer of excellence in sound.
Since 1961, from our UK home, we have created remarkable – award-winning – speakers. From our ground-breaking Uni-Q technology to our bar-setting LS50 Wireless, KEF exists to fill rooms with music as it was made to be heard, to move souls with truly authentic soundscapes.
KEF is named after Kent Engineering and Foundry where our story began. Our founder Raymond Cooke was propelled by a love of music and a refusal to compromise, and he leveraged technology at every turn to ensure KEF’s position at the cutting edge of audio.
A list of breakthroughs spanning more than half a century shores up that promise; a walk to match the talk. Patents and academic papers alike testify to decades of consistent progress, from the early use of synthetic materials to our Reference Series which determines industry standards to this day. KEF’s insistence on excellence is at the heart of a virtuous circle, which attracts the world’s most gifted acoustic engineers to join us in the pursuit of good, better, best.
Listen and believe
KEF’s mission is to deliver sound with as little intervention as possible; from treble to bass, and everything in between. Listeners should be able to close their eyes and immerse themselves in the sound so deeply that they are transported, in their minds, to the source. We believe that the best sound is natural sound – and that access to it is a right, not a privilege.
Experience is everything, and that’s no overstatement. Combining our obsessions with acoustic authenticity and innovative engineering, we’d like to think that KEF products speak for themselves.
We invite you to close your eyes and be transported. Listen and believe.
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