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LS50 Wireless HiFi System

LS50 Wireless, is a complete and fully active music system. Sharing the same winning acoustic features of KEF’s renowned LS50, LS50 Wireless enables the user to easily enjoy excellent music reproduction, previously only achieved with a system comprised of separate high quality components. Created without compromising on any of LS50's award winning acoustic capabilities, LS50 Wireless adds audiophile-grade amplification and sound processing, as well as extensive connectivity.

• LS50 Wireless wins Knockout Award & Product of the year 2016 from Digital Audio Review. Click here to read the full review.

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LS50 Pedigree

All of the acoustic features and innovations that set the LS50 apart from every other speaker in its class remain. The FEA-designed cabinet with its constrained layer damping bracing and precision engineered curved baffle, the Uni-Q driver and the elliptical flexible port all work in concert to prevent cabinet vibration and resonances that produce unwanted sound coloration – putting you that much closer to how your favorite music was intended to sound.
KEF LS50 Wireless Uni-Q Driver
Uni-Q sound taken to the next levelUni-Q sound taken to the next level

To get the most out of your music, every note should arrive at your ears at exactly the right time. Before KEF perfected our Uni-Q technology, this perfect time alignment could only be experienced in a small 'sweet spot,' leaving listeners outside of the ‘sweet spot’ with a less than ideal listening experience. Uni-Q changed that, opening up the optimum listening space to practically every spot in your room. The LS50 Wireless employs an advanced time correcting DSP crossover which takes that awesome achievement to the next level by correcting for inherent time delays introduced in the crossover stage. Amazing sound dispersion matched only by a live music performance is now attainable in virtually every room. This incredible achievement cannot be reproduced by any other active speaker.
Crossover Timing Correction

Every note should hit your ears at exactly the right time. Previously, this perfect time alignment was only a theoretical ideal and perfectly accurate sound could only be experienced within a small 'sweet spot'. With LS50 Wireless’ advanced time correcting DSP crossover and the unique sound dispersion abilities of Uni-Q, accurate sound reproduction can be achieved in practically every location in any type of room. This is a feat that cannot be reproduced by any other active speaker.
KEF LS50 Wireless Crossover Timing Correction
Audiophile Grade System ConfigurationA complete fully active system

The LS50 Wireless features an end-to-end 192kHz/24-bit high-resolution digital signal path, a streaming pre-amplifier, and two separate DACs for each channel, for a total of four. Powered in the analogue stage by an incredibly fast and clean 230 Watts per channel in a bi-amp dual mono configuration, the LS50 Wireless is a complete, high-fidelity music system that will cost you far less than you’d spend putting together the separate components necessary to match the performance of the LS50 Wireless. LS50 Wireless gives you all of the connectivity options you’ll need to get the most out of your music, including 2.4GHz/5GHz Dual-band Wi-Fi, Bluetooth 4.0 aptX, Asynchronous USB Type B, TOSLINK Optical, and RCA-type line-level analogue inputs. A dedicated LS50 Wireless app (available for iOS and Android) easily facilitates network setup, music streaming, playback and DSP control.

Ultimate Flexibility

An incredible listening experience is easy as plugging in. Simply connect both LS50 Wireless speakers to a power source and connect an audio source to enjoy high quality sound that music deserves. Adjust how the LS50 Wireless sounds using a selectable EQ tuned to compensate for different mounting scenarios, creating more options for placement and positioning. Regardless of placement, Uni-Q technology disperses sound evenly for total listening enjoyment. Use the touch sensitive control panel or the remote control to ensure complete control of LS50 Wireless from a different aspect. A dedicated iOS or Android app can allow detailed adjustment to optimise sound for different rooms.
Ultimate Flexibility

• In the box

- LS50 Wireless System (Right: Master speaker; Left: Slave speaker)
- 2m Power cord x 2
- 3m Cat-6 Inter-speaker cable x1
- 2m USB cable x1
- 1m LAN cable x1
- Matching Remote Control
- Quick Start Guide
- Safety and Warranty Card

• Click here to learn more about the KEF LS50 Wireless System at

Customer Reviews

Great all in one system Review by Randy
Build Quality
Sound Quality
Would you recommend?
Awesome!!! (Posted on 3/17/2017)
Glorious sound, fantastic looks - soured by a few niggles Review by Iain
Build Quality
Sound Quality
Would you recommend?
There's no point trying to be coy about it - these sound simply glorious and with their matched amps and corrected crossovers produce a level of detail, balance and togetherness usually reserved for a much higher price point. They do benefit massively from the addition of a sub that can be tucked away out of sight and with a bit of careful cable management and the right stands they are very graceful, minimal and non-intrusive. As someone who's lived with a profusion of cabling and extras for decades it's a big bonus, but just a cherry on top.

The problem is some software design choices - rather common sounding power on and off noises remind the user of turning on your PC or rebooting a phone or default ring-tones and you will hear these very regularly as the speakers automatically power down and require manually turning back on even if a constant TOSLink or USB connection is maintained. The power cycling process produces loud clicks from the secondary speaker as the amplifier engages and disengages - considering no such noise comes from the primary this is a rather amateur moment. Finally to adjust any speaker settings you must stop whatever you're doing and switch input to bluetooth/wireless mode so the app is willing to access the speaker - this is clunky as hell and makes any finetuning a series of stabs in the dark.

Firmware can apparently be updated via a network connection but there is no information to be found anywhere within the app or KEF's product pages about where this firmware might be found, how to request updates or even how to receive notification of when updates might be available. Attempting chasing a remedy to this got me told there would be no updates unless enough people complained - hopefully the fact that half the reviews on this site comment on issues will get some action.

Generally a truly wonderful sounding product let down by a poor user experience which needs further refinement, hopefully forthcoming with a firmware and app update including a working FAQ section on such details. I would suggest discussion of firmware updates before purchase. (Posted on 3/4/2017)
Big sound from a small package! Review by Alex
Build Quality
Sound Quality
Would you recommend?
I'm blown away by how much and how good the sound that comes out of these little speakers is! These are perfect for anyone looking to create a small (but with big sound) 2.0 or 2.1 system in a small to medium space!

I'm using these as my computer speakers, wired. They simply sound amazing. Connecting to my iPhone 7 through bluetooth there's a step down in sound quality but nothing drastic, most people wouldn't notice the difference, unless you're an audiophile or were listening to both wired/bluetooth back to back. Overall I'm extremely satisfied with them!

About the app, yeah....lets not talk about the app for needs serious work! This is the only negative, keep in mind this product is relatively new, I'm sure Kef will make it right in due time. Right Kef?!?! (Posted on 2/24/2017)
Great things do come in small packages Review by Dan
Build Quality
Sound Quality
Would you recommend?
Great build, looks, quality and sound. Has the bass of a much bigger speaker. The only issues (and they are minor) are that the KEF app is sporadic and I'd like to see the system turn on when it sensed a source. (Posted on 2/17/2017)
I'm very impressed! Review by Daniel
Build Quality
Sound Quality
Would you recommend?
I purchased a pair of these from my local KEF dealer to find out if they'd impress me enough to replace my KEF LS50/integrated amp/DAC digital audio system. I was intrigued by the idea of perfectly matched speakers/amp/DAC since I'm a firm believer in ideal synergy best being achieved by engineers who's pay grade is far above my own. I'd never buy a sports car with an engine, electrical system, and chassis that weren't designed by one manufacturer so why should we be doing this with our audio? How do I feel about the "me way of doing things" after a couple of weeks of analysis? I give the LS50 Wireless a firm A+, and the last of my previous equipment sold on eBay today. I couldn't be any more pleased. Like several of the professional reviewers have said, I never heard my LS50s sound this good when powered by an external amplifier and expernal DAC. I'll never go back! (Posted on 2/13/2017)
IMHO These are a complete Audiophile Grade Listening Solution Review by ChipB
Build Quality
Sound Quality
Would you recommend?
There are plenty of reviews that are positive, so in my perspective, LS50 Wireless are outstanding clarity, air, sparkle, depth, bass (extended option,) naturalness of voices, punch, impact. Tremendous ability to fill out a medium sized living room, with beautiful deep sound for the times you want to experience the music as if live, or relax with it in the quiet of the evening. In the 70's I had a mega watt, floor standing high end Bose, large equipment rack and radial turntable. I can let it all go, without feeling like I have stepped down in anyway. For years I have been into some extremely high-end digital audio with Headphones, matching headphones cables, amps, DACs and pristine resolution files, and these stack up very well, for an open audio system. I could just use the system as is, BUT in my situation I needed to have longer power cords (3m), and audio speaker interconnect, (5m) for my set-up so I did change them and upgrade, BUT otherwise did not feel the need. For power cords I picked a 14GA basic audio level power cord, and for speaker interconnect, I chose a Cat 7 cable, though Cat 6, should be fine. KEF stands are not available at this time, so I chose one with a 61/2 x 8 top plate in the $200. range, but also used an Aperta isolator, popping off the rubber speaker feet. I also added a AC line filter box, because I don't have other home theatre equipment causing me to go beyond a basic surge protector. I've spent weeks making these choices, so I hope this may help someone else. I did check with KEF support, and they recommended a speaker stand top plate of 7x8 minimum, and stands which are fillable with a dampening material. I enjoy listening to them in extended bass setting, and they advised they can be used this way 100% of the time without damage. They also said "You will definitely notice more bass after the break in period. The breaking period will occur between 120 or 140 hours of use. The drivers will completely open up." Hope this helps others! My stands are 24 inch, and with the Aperta, the height is 27 inches. KEF support thought anywhere between 18-28 inches height is fine. Finally i do notice a improvement in using a good source wired with a a good line out (3.v vs 1.V). Wireless is excellent jus the app still needs to improve. (Posted on 2/7/2017)
Amazing sound but features need help Review by Darwin
Build Quality
Sound Quality
Would you recommend?
Really great sound.
Terrible remote.
Needs auto switching of sources, ability to use phone app instead of remote, and Airplay. There is really no good reason not to have airplay on these as bluetooth has much worse sound quality.
Roon and MQA integration would be really nice. (Posted on 1/31/2017)
Breathtaking Sound, But Not Really "Wireless." Review by ImageCaptureNYC
Build Quality
Sound Quality
Would you recommend?
I received these speakers via Fedex a few days ago after waiting since November for their official release month of January, 2017. They sound amazing, but my problem is not with the sound, but with the interface.

I read a few reviews online prior to their arrival (but unfortunately after I ordered them) that the speakers can't play (can't even see on my hard drive) SACD-ISO, DSD64 or DSD128 files - only a max-24bit/192kHz file. That may be what the KEF app can play, but I'm here to tell you that I play SACD files through Audirvana Plus just fine, and they sound amazing on these speakers. The manufacturer was so surprised when I told them I was able to get them to work that they emailed me twice with requests for details.

Here's the issue I have - you CAN play music via WiFi thru your phone, but not from a computer or laptop. I'm left with having to connect a USB cable from my laptop to the speakers - very unsightly and cumbersome. Their support team told me that I could stream via Bluetooth, but there would be a loss in quality.

Again, they sound amazing thru my USB setup, but I am hoping that A) KEF acknowledges that you CAN play SACD-ISO files using the right software, and B) solve the problem of WiFi interaction with computers, so audiophiles (the intended audience at this price-point) can stream their high-res files without clumsy cables. They are not truly "wireless speakers" because they are wired to each other, wired to their respective electrical outlets, and now, unfortunately wired to my computer.


From KEF:

The KEF LS50W uses PCM audio for playback and similar to most other playback devices and platforms, users wishing to stream DSD/SACD audio must first convert the audio from DSD to PCM. This is accomplished via a menu selection in the playback program. For example, in Audivarna, as per their user manual (pg. 34,35), the user must select either 64-bit decimation or 64-bit multistage to convert the DSD audio signal to PCM before sending to the DACs. You absolutely stream DSD files to the LS50W as long as your server/host converts the file to PCM first, so therefore technically, you are playing files converted from DSD to PCM rather than playing straight DSD.

The KEF LS50W supports DLNA streaming, but it does not support Apple Airplay. You can stream audio from your DLNA-enabled device such as a PC or laptop but you will need an Airport Express (for example) to stream from a MAC to the LS50W. DLNA is the world-wide standard for non-Apple manufactured audio/video streaming and connection, and Apple has produced products such as the AirPort Express for this express purpose.

Because of the necessity in having as precise a clock as possible to sync the left and right channels for phase-correct output and to reduce other issues caused by imprecise clocking, the clock generated in the master speaker as well as the audio data, is transmitted via a CAT6 cable. In order to provide as high quality an output as possible, there are separate amplifier and DSP sets in each speaker, because of this each speaker requires its own AC power source as well. As a result of our desire to make LS50W an extremely high-end active music system, the system is wireless, but the speakers within the system, by necessity, are not. (Posted on 1/26/2017)
Award Speaking Speakers Taken To The Next Level Review by Alex
Build Quality
Sound Quality
Would you recommend?
I am a previous owner of the KEF LS50 speakers which were already one of, if not the best, speakers in their original price range ($1500). Well these speakers improve on just about everything with those and actually prove to be a better value now that you don't need to worry about an Amplifier, DAC or Network Streamer if you don't want too. And the way the Amp/DAC are implemented I can say that you probably won't want too. I tried multiple different amp/DAC pairings with my original LS50's and nothing sounded as good as these custom built one's do. Musicality is through the roof on these bad boys, they quite simply sound fantastic.

If I was to nitpick anything I would have to say the Network Streaming is a bit lacking in terms of user interface, as well as the ability to use TIDAL streaming, which was a deal breaker for me. Easy enough fix though, I just hooked up an Auralic Aries Mini as my streamer, picking up TIDAL in the process as well as a better UI and slightly improved sound quality. Not necessary, but I would recommend something like the Aries or even a Sonore MicroRendu if you're serious about your hi-fi. If they do end up implementing TIDAL streaming (and Roon for that matter), then these would literally be perfect. A job well done by KEF, and a speaker that seriously takes hi-fi to another level for a very modest price. (Posted on 1/26/2017)
KEF LS50 wireless brings audiophile-grade sound into the modern home Review by Kishan
Build Quality
Sound Quality
Would you recommend?
I recently purchased the LS50 wireless in white / copper. The speakers look great, have superior build quality and they feel very solid. They are super heavy and barely vibrate when in use (which is a great when placed on a desk). The setup experience was super easy (as it should be) with the desk/stand, wall/free space options. Sound quality is everything you would expect from a pair of high end speakers - The rich and deep sound is nothing but spectacular. When not in use, these speakers power themselves off automatically. Highly recommend these speakers if you are looking to invest in audiophile speakers without having to think about the complexity and intrusive physical footprint of a multi-component sound system.

In terms of improvements, I hope that KEF provides a way to wake up the speakers when music is streamed vs. having to turn on manually on the speaker or using the remote. In a future version of the product, it would be great if the speakers could be wirelessly linked to each other instead of the CAT cable connection. (Posted on 1/25/2017)
Great Sound, Bad User Experience Review by Eugene
Build Quality
Sound Quality
Would you recommend?
Well, I am avoiding describing the audio quality as there will be plenty of audiophile reviews.

My biggest concern with these speakers is User Experience. While claiming that these speakers are Wireless, it seems KEF killed such an important feature as auto wake up if signal is coming into any of the inputs. This feature greatly worked in KEF X300A Wireless. You could just start streaming something with AirPlay or AUX and speakers would turn on and start playing. These are silent dead! Until you find a remote control to turn them on, or if you will make a round trip to the end of the room to press the ON button on top of the left speaker. Seriously?! And this is every other hour, as it seems speakers go sleep after an hour or so of not playing.

I am not sure if KEF is about to address this in some firmware update, as it seems they introduced this silly ON button on the speaker and on the remote control to remind you that you are still on the planet Earth and you must to suffer a bit while enjoying the heaven class audio quality.

P.S. One of the possible solutions would be at least turn on speakers if Volume Up/Down signal is sent from IR Remote. As you can program you Apple TV 4 Remote to control volume of these speakers at the moment. (Posted on 1/19/2017)


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You're reviewing: LS50 Wireless HiFi System

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Model LS50 Wireless System
Drive Units Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
LF/MF: 130mm (5.25in.) magnesium/aluminium alloy
Frequency Range (-6dB) Measured at 85dB/1m
40Hz – 47kHz (More bass extension)
43Hz – 47kHz (Standard)
46Hz – 47kHz (Less bass extension)
Depending on speaker settings
Frequency Response (±3dB) Measured at 85dB/1m
45Hz – 28kHz (More bass extension)
50Hz – 28kHz (Standard)
61Hz – 28kHz (Less bass extension)
Depending on speaker settings
Max Peak SPL 106dB
Inputs 2.4GHz/5GHz Dual-band Wi-Fi network
Bluetooth 4.0 with aptX® codec
USB Type B
RCA Analog Line Level Input
10/100 Mbps RJ45 Ethernet (For network and service)
Output Subwoofer output
Amplifier Output Power
LF: 200W | HF: 30W (Per Speaker)
Bluetooth Range 10m
Bluetooth Memory 8 devices
Resolution Up to 24bit Depending on source resolution
Sampling Rate Up to 192kHz (USB Type B)
Up to 96kHz (TOSLINK Optical)
Depending on source resolution
Wi-Fi Network Standard IEEE 802.11a/b/g/n
Wi-Fi Network Frequency Band Dual-band 2.4GHz/ 5 GHz
Power Input 100 – 240VAC 50/60Hz
Dimensions (H x W x D) 300 x 200 x 308mm(11.8 x 7.9 x 12.1in.)
Weight Left Speaker 10.0kg (22.0lbs.) Right Speaker 10.2kg (22.5lbs.)
Weight Left Speaker 10.0kg (22.0lbs.) Right Speaker 10.2kg (22.5lbs.)
Unit Measurment Pair
** KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. **
KEF LS50 WIRELESS HIFI SPEAKERS Knock Out Award & Product of the Year award 2016
 "Something for audiophiles, something for mainstreamers – after all, it’s in the LS50 Wireless’ DNA. As a straddler of worlds, the KEFs walk away not only with a Knockout Award but also DAR’s Product of the Year award for 2016. If this product doesn’t convince audiophiles of the legitimacy of active loudspeakers, nothing will."
Year: 2016
Magazine / Issuing Body:
Country: Germany
Product: KEF LS50 Wireless System
Read full review.
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