Crank up the volume with this KEF LSX wireless music system. The powerful 4-inch Uni-Q driver arrays deliver high-fidelity audio, while the included app lets you tweak EQ settings for the perfect sound. This KEF LSX wireless music system lets you stream audio from a variety of sources with advanced Wi-Fi, Bluetooth and wireless connectivity.
Multiroom compatible speakers
Play music in multiple rooms at once.
Bluetooth music streaming
Makes it easy to enjoy tracks stored on a compatible Bluetooth-enabled device (not included).
2-way speaker system
Sends the right frequencies to the right speakers for outstanding audio.
Rich, powerful sound
Includes a mid/woofer and a tweeter.
Offers superior signal-to-noise performance, maximizing audio fidelity, so you can enjoy music playback with near CD-quality sound.
Plays high-resolution digital music files
For high-resolution sound.
More ways to connect with the music you love
Wi-Fi and Bluetooth capability for pairing wireless devices, plus 3.5mm stereo mini input for wide-ranging compatibility.
KEF LSX Hi-Res Wireless Speakers
Optical Digital Audio, 3.5mm audio, Subwoofer, USB Type A
LSX Hi-Res Wireless Speakers
Minimum Frequency Response
Maximum Frequency Response
High Resolution Audio
Number Of Speakers
Number Of Tweeters Included
Number of Drivers Included
Wireless Multi-Room Audio
Wireless Multi-Room Technology
Optical Digital Audio, 3.5mm audio, Subwoofer, USB Type A
To be completely honest, I almost got fed up with the firmware update process to the point where I almost deleted this entire review and was simply going to post a recommendation to purchase another speaker and be done with it. But here we go….
Packaging is sturdy. Not cheap, but not the most impressive I’ve seen. Outside box had delivery damage but everything inside was intact and unscathed.
Owner’s Manual/Quick Setup is worthless. The best directions they give is to download the app. Just what I want. Another app on my phone. Make that two so you can connect directly to streaming services! See below for more information on why this app is lacking.
This is my first set of wireless speakers that are separate (except my Sonos setups). In the past I’ve had one powered speaker and a speaker cable running between the two. Positive to this is there’s no cable tethering the speakers together. The negative is each speaker needs to be within 6 feet of a power source since the power supply cable is that long. Unless you add an extension cord. These speakers do run off WiFi and Bluetooth sources for wireless play, but also have the capability to be hard wired with an Ethernet cable, ¼” auxiliary input, and optical input into the master speaker. Of course this means that the master speaker needs to be close to the source if hardwired. There is also a USB output for charging capabilities. I assume for a phone or mobile device that you have connected. I can’t see much more use than that for a USB in the back of a speaker. It also has a wired output for a sub-woofer.
For being as small as they are, these speakers are heavy (not in a bad way)! Weight is balanced low in the speakers which should minimize any accidental tipping. The speakers have a threaded connector on the base for mounting to a speaker stand. There are no mounting capabilities on the back of the speaker. Non-skid feet on base of the speaker keep it firmly attached to the surface it is sitting on. They seem to be built solidly. No screens on the front of the speakers.
In order to set up speakers, you need to direct connect to them via a mobile device through their WiFi. **Be advised you may have to temporarily change your devices settings to not switch WiFi connections automatically through this process. I guess you may want to make sure your screen doesn’t time out as well. Apparently this app can’t work properly when the screen shuts off. *** Something in the app process is slow, causing me to search a couple times for the WiFi connection and the speakers during setup along with making the on screen buttons slow to react. A little annoying but the process finally worked. ***Don’t go putting the speakers where you want them yet!!!*** Mine needed a firmware update. And the only way to update the firmware is to connect both speakers together with the provided Ethernet cable. And then the firmware crashed! The app is having a hard time locating my speakers on my network throughout this process. This is the only set of KEF speakers we have on the system and all suggestions by the app were followed. The app seems to lock up during setup and firmware updates, only to work again if you close the app and reopen it. Then the firmware froze. I then had to follow the steps to “recover” which are a complete pain, including having to hard wire the speakers into my router with an ethernet cable. If this is the process I have to go through for every update, I’m out! So now I’m sitting here babysitting my phone for “up to 20 minutes.” I’m now about an hour into setup. My only hope is that this update corrects some of the above issues. I have more wireless speakers, most of them being Sonos speakers, but I have five brands total that I own. This by far has been the most tedious and time consuming process for setup I’ve ever dealt with.
Ok! Speakers set up! Woo hoo! The sound was initially crap. I’m still not impressed with the highest volume. It should be able to go up louder. I thought the speakers sound were muddled and lacking especially during higher volumes. However, the different audio files I was listening too caused that to be more noticeable than with others. It seems audio sources with lower quality are very noticeable because of the speaker quality being so high. The acoustics of the speakers is pretty impressive though. You become immersed in a wall of sound, rather than hearing two separate speakers.
The equalizer has some awfully weird setup abilities and it’s all in metric. It would be nice to switch to the imperial system for distances. There are no true “equalizer” settings. The remote control needs a direct line of sight to the master speaker, but if it is, it is functional and responsive.
At the price of these speakers, my expectations were high. I believe there is a lot of potential with these speakers, but with the better versatility and relatively cheaper alternatives, I would lean towards an established company like Sonos, especially if I were expanding my system to the whole house. But if you are using this as a standalone system, the quality and features are worthwhile. The app is lacking. The simplicity of setup and updates is lacking. But the quality of the audio cannot be overlooked. Three stars for now and I would cautiously recommend these, but only if you catch them on sale.
KEF has long had a track record of great speakers. They don’t stay satisfied with what they have and continuously innovate. When they came out with the LS50 system, I was blown away. Wireless sound and streaming capabilities in a high-end speaker system. Then, I heard about the LSX wireless system which was supposedly to be the little brother of the LS50 system. I just had to try them out. All I gotta say is…wow.
The unboxing experience was pleasant enough. They’re packaged well. It comes with two power cables, an Ethernet cable, and a remote. The remote feels a little cheap and plastic compared to the rest of the ensemble. First thing that you notice when you take them out of the box is the size. They are really compact. They measure 9.5 inches by 6.1 inches by 7.1 inches. The longest dimension is less than 10 inches! Hard to believe that so much technology could fit into it. I was also curious what kind of sound something this small could make. More on that later. The next thing you notice is just how nice the design is. It is really an elegant and minimalist design. The gloss white colorway is just so clean and I love it.
The front of each speaker has a 4” Uni-Q driver and a ring that shows what mode the speaker is in based on the color. KEF claims the “Uni-Q” driver improves stereo imaging across a wider listening area. The back has a subwoofer output and a panel of buttons/ports that differs between the master and slave speaker. The panel of the master speaker has a button for bluetooth pairing, a button for master/slave pairing, a reset button, optical-digital input, 3.5mm aux input, subwoofer output, ethernet port, RJ45for the master/slave connection, USB, and AC input. The panel of the other speaker has just the RJ45 for the master/slave connection, button for the master/slave pairing, and AC input. The ring of light in the front changes colors depending on what input you want. If solid white, they are operating in wi-fi mode. If green, spotify connect. If blue, bluetooth mode. If purple, then solid purple. If yellow, then AUX mode. You can use the app or the remote to change the inputs. Unfortunately, the speakers cannot automatically switch to the active input. You have to manually switch using the app or remote.
Set up is easy enough. You have to use the KEF Control App. You get the speakers set up to the WiFi network. Full disclosure, I think the app is disappointing. It is possibly one of the biggest weaknesses of the whole setup. You can use the app to change the preferences such as whether the speakers are on a desk or a stand, how far the speakers are from the wall, how much furniture is in the room, etc. I didn’t play with it too much but I do think there differences in sound based on these settings. You can reverse the speaker orientations from right to left and vice versa. You need a separate app called KEF Stream to connect to Tidal or Spotify. I think one could have done the job.
The most important thing: the sound. It is AWESOME. These little speakers can get LOUD. In my living room, the speakers sounded just as good as some of my floor standing speakers. They sound much larger than you think. In regards to the stereo image, I was blown away. The trebles were smooth. The bass not overpowering. The mids were great. If you want more bass, then you can connect a subwoofer. I really thought the sounds were balanced enough. If you attach the Ethernet cables to connect the speakers, they are supposed to transmit 96kHz vs 48kHz wirelessly. My ears could not hear too much of a difference. However, I preferred the wired connection for more reliability.
Amazing sound with balanced bass, mids, trebles
Sleek and elegant design
Great build quality
Lots of input sources and easy to switch between them
Pretty easy to set up
KEF Control app is disappointing
You need separate KEF streaming app to stream
Remote needs work
Manual switching between inputs
All in all, a great speaker system from KEF! It’s the peripheral stuff that needs work. Although these minor things are annoying especially with the premium you are paying, the sound and design really makes up for it.
I was so excited to get these until I tried to connect them to my computer. After an hour and a half of trying, I said, "F it" and took them back. Happy I did because the B & W immediately connected and sounded amazing!
The KEF LSX are phenomenal sounding speakers, especially when taking their size into consideration. They are the ideal speaker for a desktop environment. In addition the LSX are powered/active speakers with a built in digital to analogue converter (DAC) with various wired and wireless connectivity options.
However, when connecting to the LSX via the aux/3.5mm to a phone, my desktop, or anything else I would get a loud obnoxious hissing sound. I tried three different 3.5mm cables and had the same issue. I had to use the optical in so I could use the speakers with my desktop.
Set up was also a major pain. You have to use the KEF control app which states the LSX won’t connect if you’re using a mesh network…I have a mesh system where the 2.4ghz and 5ghz are mixed instead of separated out. All the other 40 devices in my home have no issue connecting with a mesh network and I wasn’t about to split my network into 2.4 and 5 just for these speakers. Luckily, I just connected the master speaker into ethernet but if I wanted these speakers in a place that I couldn’t easily run ethernet to them I would have been forced to looked for an alternative.
After the speakers were up and running and had their firmware updated I started to enjoy the sound stage and the KEF coloring on the music. I couldn’t use an aux/3.5 mm due to the hissing sound, so I used airplay to connect my phone to the LSX system. The LSX system was connected to my network via ethernet, then the music began to stutter and stop. I was 2 feet away from the KEF LSX therefore there was no reason for this to happen. I cast music to my sound bar and google homes with no issue at all, then used airplay to send my music the LSX for 30 minutes until I had the stutter and stop issue again.
Lastly, the bluetooth connectivity can be aggravating if you have more than one bluetooth source since the KEF control app doesn’t easily tell you what device is connected to your LSX set up. I really like the sound the LSX produces, however the connectivity portion is not well thought out and buggy at best. Maybe I got a mediocre set, or maybe KEF can fix these issues with a future firmware update (my set is currently on 4.1 as of 1/31/20).
The unboxing experience is nice. The materials and craftsmanship is top notch. You will need to download the app in order to setup the speakers, which did not give me any issues setting them up. After that, it's not as great as I expected. After they were setup, the app informed me that the speakers needed a firmware update. That took about 20 minutes. Once setup was complete, the speakers have a relatively good sound. Nice clean bass and mids. It seems to be mixing highs. I guess that is to be expected since it uses one speaker to playback lows, mids, and highs. Having a separate speaker for the highs would have been nice. When playing music at low to mid volume levels, they sound like any other average speaker. However, if you crank up the volume they can easily fill up a room with little to no distortion. They're advertised as having wireless functionality, but it's far from perfect. It offers WiFi, AirPlay, and Bluetooth wireless options. When I used them over WiFi, the slave speaker that was connected to the master speaker kept cutting out. I tried them over AirPlay and go the same result. The same happened when I tried connecting them via Bluetooth. They tend to work best when they are used as hardwired speakers. I ended up using a spare Alexa Echo Dot device I had laying around the house to use them wirelessly. I sent the signal to the Echo Dot wirelessly, while having the Echo Dot hardwired to the speakers. Maybe another update could fix the connectivity issue. For the price they cost, they should be perfect out of the box.
The KEF LSX Hi-Res Wireless Speakers are absolutely stunning. From the moment you open the box, you can see the meticulous care that went into not only packaging the speakers, but designing and building them. The quality is top notch as expected with speakers at this price point.
Setup of the speakers was easy. Plug in, download the app, update firmware, and start listening. Be up and running within 20 minutes (the longest part of setup was the firmware update).
Wow, once you hear the sound these speakers produced, you will be blown away. I honestly didn't expect such great sound from such compact speakers, but was very surprised when he my music played clear and crisp. I could crank the volume up quite high before any sort of distortion was heard. The sound easily filled my large two-story living room. Absolutely amazing sound.
The only critique I have for the system is the second app needed for streaming from Spotify. The main app is relatively easy to use and offers good functionality (setup of speakers, equalizer, etc.), but you have to download a second app if you wish to stream from Spotify. Seems like this functionality could have been built into one app for convenience.
But that's a minor inconvenience given the other ways to play music on the speakers. Airplay worked flawlessly, bluetooth was easy, or connect a device via fiber optic for clear sound.
I must say I wasn't expecting much from these compact little speakers, but was I wrong. You won't be disappointed at all.