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LS50 Wireless II


The Ultimate Wireless HiFi Speakers

LS50 Wireless II is more than a high-performance loudspeaker; it’s the perfect all-in-one speaker system, streaming from any source thanks to wireless compatibility with AirPlay 2, Chromecast and more, plus wired connections for your TV, games console and turntable. Great sound, no strings attached. KEF's 12 generation Uni-Q with MAT delivers reduced coloration, less distortion, and a sound that is more transparent and life-like than previously possible. 

Product Features
LS50 Wireless II
Every note. Every word. Every detail.
LS50 Wireless II
Every note. Every word. Every detail.
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


"These sequels are among the most thrilling speaker systems we’ve heard." — September 2020, What Hi-Fi?


“These sequels are among the most thrilling speaker systems we’ve heard.” — September 2020

All the music, all the time
No matter how you stream your music, LS50 Wireless II has you covered. You can stream directly from the Spotify native app with Spotify Connect. With the KEF Connect app you can also stream Tidal, Amazon Music, Qobuz, and Deezer or tune in to internet radio and podcasts.
All your devices
Out-of-the-box wireless compatibility with AirPlay 2, Google Chromecast and more, backed up with wired connections for your TV, turntable, CD player and games console. Whatever source you’ve got, LS50 Wireless II is ready for it.
Hi-Fi enthusiast
LS50 Wireless II has audiophiles covered with support for streaming music files up to 24bit/384kHz, as well as MQA, DSD256, and Roon Ready (coming soon). These features mean that even the experienced hifi enthusiast will marvel at this exceptional loudspeaker’s ability.
Let you be you
Even beyond the flawless musical performance, LS50 Wireless II is a breeze to set up thanks to the KEF Connect app. It is intuitive to use with any source in your home, and it allows simple over-the-air firmware updates that bring you new and improved features with the minimum of fuss.
Wired or wireless connectivity
You can choose to operate LS50 Wireless II completely wirelessly at 24bit/96kHz resolution for a completely clutter-free set up, or you can connect the two speakers with the supplied cable for 24bit/192kHz resolution sound.
Personalised listening experience
The brand-new dedicated KEF Connect app controls LS50 Wireless II on a day-to-day basis, including intuitive sound settings so you can tune the sound to your own personal tastes. You can even select your favourite source to wake up LS50 Wireless II whenever it comes on, allowing you immediate access to the best sound.
Simple multiroom system

When using LS50 Wireless II with Airplay 2, Chromecast or Roon (coming soon) you can stream to multiple speakers around your home at the same time. By using multiple LS50 Wireless II speakers, you can have a simple, high-performance multiroom system.

* Coming soon 

Performance. Most accurate,immersive sound.
LS50 Wireless II features KEF's 12th generation Uni-Q driver with Metamaterial Absorption Technology for exceptional acoustic accuracy and a pure natural sound.
Music Integrity Engine
All aspects of the LS50 Wireless II’s performance is aided by KEF’s bespoke Music Integrity Engine. This collection of bespoke Digital Signal Processing algorithms is optimised for the Uni-Q driver, enabling it to deliver a perfectly timed performance, for better imaging and a tighter sound.
Plentiful power
The built-in amplifiers have been developed in-house by KEF. Each tweeter is driven by a 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 up to 108db.
Attention to every detail
Every aspect of LS50 Wireless II has been considered for acoustic benefits and from a design perspective. The low-diffraction, curved baffle is precision modelled around the Uni-Q driver, while eye-catching heat sinks and colour-matched ports are located on the well-equipped rear. The top-mounted control panel is designed to be stylish and functional.
The perfect colour for you
LS50 Wireless II is available in three matte finishes, carbon black, titanium grey, and mineral white, as well as a Crimson Red Special Edition. All the colour options are mirrored on both the drive units and the rear-facing port. The top-mounted control panel is designed to be stylish and functional.
What's New
Owners of the LS50 Wireless may be wondering what’s new? The answer: pretty much everything. The original was fantastic, but LS50 Wireless II is better in every respect, with improved sound, better connectivity and usability.
LS50 Wireless II
LS50 Wireless
Streaming Services
Wireless Streaming Support
* Coming Soon
Multi-room Streaming
Built-in Amplifier Power (per system)
Max Source Resolution
Interspeaker Connection
Proprietary Wireless
or Cat 6 Cable
Cat 6 Cable
Driver Unit
12th Generation
Uni-Q with MAT

frequency response smoothness
11th Generation
Driver rearward Source Absorption
by MAT
by vented tweeter
Mid-band Total Harmonic Distortion (THD) at 90dB/1m
THD 0.07%
Extremely low distortion by driver motor redesign
THD 0.1%
Low distortion
The best way to experience the brilliance of LS50 Wireless II is up close and personal. We are certain you won’t regret the experience.
Reviews 3

Customer Reviews

  1. great sound quality, poor computer connectivity
    I've been getting to know my new speakers. These are going to replace my x300a's that I've used since they came out as my computer speakers. I work from home & my use is essentially split between listening to music, watching youtube videos and video conferencing.

    The lack of USB connectivity has been vexing, I can connect via AirPlay, but the lag is a big problem for video conferencing. Also, volume and mute keyboard controls work most of the time, but not all of the time. The other issue is I am on VPN a decent share of the day - I think there is a way to poke holes for AirPlay, but it is a project.

    I've been looking at USB-SPDIF converters as a potential solution. I don't like that I wouldn't have volume control, but I'm expecting it to solve the latency issue. There are a range of devices that do this job - wondering still if I'm missing something obvious. I contacted KEF support for advice and total crickets for 3 days now.

    My only other gripe with the speakers is the annoying strum noise they make when they power on (annoying, but fine) and when they power off!!! Like, when its 2am and I am headed to bed. I turn off the speakers and in response they play a sound? I am turning it off... I clearly don't want sound to come out.

    Review by

    Posted on

  2. Nice upgrade
    I owned the original LS50W and sold them to upgrade to the new version. The good news is they sound better and the app is better. The streaming options and performance from the app is significantly better than the original version. The improvement in the sound is is a nice refinement in clarity, detail and effortless presentation. As good as the original is, the new version offers a worthwhile improvement. The not so good news is that the LS50II is not Roon Certified. The inability to use the LS50WII with Roon is a disappointment and a step down in convenience from the original version. KEF tells us this situation will be fixed "soon". BTW. Roon is available via AirPlay or Chromecast but this is not how I listen to Roon. Fortunately KEF did improve their app so while I am waiting for Roon I am able to easily access my streaming services. Again, great sound and a good app but please get the Roon Certification issues worked out.

    Review by

    Posted on

  3. Awesome
    These sound great but more important kef finally made an app that actually works.

    Review by

    Posted on

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You're reviewing: LS50 Wireless II

Model LS50 Wireless II
Drive Units Uni-Q Driver Array:
LF: 130 mm (5.25 in.) aluminium cone
HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology
Frequency range (-6dB) measured at 85dB/1m 40 Hz – 47 kHz *Depends on EQ settings
Frequency response (±3dB) measured at 85dB/1m 45 Hz – 28 kHz *Depends on EQ settings
Amplifier output power (per speaker) LF: 280W HF: 100W
Wireless streaming features AirPlay 2
Google Chromecast
ROON Ready
UPnP Compatible
Bluetooth 4.2
Streaming services Spotify via Spotify Connect
Amazon Music
QQ Music via QPlay
Internet Radio
Source resolution Network up to 384kHz/24bit Optical up to 96kHz/24bit
Coaxial up to 192kHz/24bit
HDMI up to 192kHz/24bit
Interspeaker connection 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
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) 20.1kg (44.31lbs)
Power input 100 – 240VAC 50/60Hz
Power consumption 200W (operating power)
<2.0W (standby power)
Primary speaker Inputs HDMI eARC
Digital Coaxial
Analog 3.5mm Auxiliary
USB Type A (service)
RJ45 Ethernet (network)
RJ45 Ethernet (interspeaker)
Output RCA Subwoofer output
Wi-Fi network standard Dual-band 2.4 GHz / 5 GHz
Secondary speaker Inputs USB Type A (service)
RJ45 Ethernet (interspeaker)

** KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. **


Specification Sheet  Download
User Manual  Download
LS50 Whitepaper  Download
Connectivity Guide  Download