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KEF LS50 Wireless II

Powered stereo speakers with Wi-Fi®, Bluetooth®, and Apple AirPlay® 2 (Mineral White)

Item # 991LS50W2W

These gorgeous high-fidelity speakers are loaded with wired connections and wireless music streaming options.

These gorgeous high-fidelity speakers are loaded with wired connections and wireless music streaming options.

Item # 991LS50W2W

Ships free today

In stock
$2,799.99 pair

Other options

About the KEF LS50 Wireless II

A customer favorite gets an upgrade

KEF's original LS50 Wireless speaker system made waves in the audio world and was a huge hit with our customers, offering impressive sonic fidelity in a convenient, self-powered package. The new LS50 Wireless II retains the sleek looks while making some important tweaks for even better performance. For starters, KEF has increased the built-in power, with 280 watts for each woofer and 100 watts for each tweeter. 
Close up of metamaterial in KEF LS50 Wireless II speaker

Innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion in KEF LS50 Wireless II speakers.

A customer favorite gets an upgrade

KEF's original LS50 Wireless speaker system made waves in the audio world and was a huge hit with our customers, offering impressive sonic fidelity in a convenient, self-powered package. The new LS50 Wireless II retains the sleek looks while making some important tweaks for even better performance. For starters, KEF has increased the built-in power, with 280 watts for each woofer and 100 watts for each tweeter. 

Revolutionary sound absorption

This speaker benefits from KEF's new and innovative Metamaterial Absorption Technology (MAT). It's a highly complex, mazelike structure that's tuned to absorb unwanted sound coming from the rear of the tweeter. The resulting sound is clear, purer, and more detailed. 

Wireless music streaming options

These speakers are equipped with built-in dual-band Wi-Fi® and Bluetooth® 4.2 for easy music streaming. The free KEF Connect app offers access to popular music streaming apps, including Spotify® (via Spotify Connect), Tidal, Amazon Music, Qobuz, and Deezer. And internet radio and podcast listening are on tap as well. 

Wired connections

The primary speaker in this pair is equipped with the following high-resolution digital inputs for connecting external components:

  • RJ-45 Ethernet port for network connection (accepts signals up to 24-bit/384kHz)
  • HDMI eARC (24-bit/192kHz) for improving sound from a compatible TV
  • Toslink optical digital input (24-bit/96kHz)
  • coaxial digital input (24-bit/192kHz)

There's also an analog 3.5mm auxiliary input and a mono RCA subwoofer output. The speakers can be interconnected via Ethernet cable or wirelessly. (A wired connection allows higher-resolution 24-bit/192kHz playback.)

Cutaway view of KEF LS50 Wireless II speaker

The LS50 Wireless II features a patented offset, flexible port for reduced midrange coloration.

A room-filling "sweet spot," thanks to Uni-Q technology

KEF's patented Uni-Q technology places each speaker's tweeter in the acoustic center of the bass/midrange cone. That lets the LS50 Wireless II create a detailed, accurate, three-dimensional sound image. In essence, it makes the "sweet spot" — the ideal listening position — much larger. Sit wherever you like! It'll sound fantastic.

Careful cabinet design

The LS50 Wireless II's extremely rigid cabinet uses smooth, curved surfaces that help the sound radiate outward without distortion. It also features a patented offset, flexible port for reduced midrange coloration. As with previous LS50 models, the cabinet uses a grille-less design to show off the cool-looking driver array and super-stylish color options.

Get the most out of your speakers

Proper speaker placement is also crucial to getting the best performance out of the LS50 Wireless IIs. Placing them on a pair of color-coordinated KEF S2 speaker stands helps eliminate unwanted vibrations and reflections. Read our article on stereo speaker placement for positioning and setup tips.

READ LESS

Product highlights:

  • bi-amped design with separate woofer and tweeter amplifiers for greater headroom and lower distortion
  • Uni-Q Driver Array technology makes your entire room sound like the "sweet spot"
  • innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion
  • 5-1/4" aluminum cone woofer
    • amplifier power: 280 watts (Class D)
  • 1" vented aluminum dome tweeter
    • amplifier power: 100 watts (Class AB)
  • connection between left and right speakers: wired (allows 24-bit/192kHz audio) or wireless (allows 24-bit/96kHz audio)
  • frequency response: 45-28,000 Hz (±3 dB)
  • peak SPL: 108 dB
  • MDF enclosure with elegant curved front baffle
  • bass-reflex cabinet with patented offset, flexible port for reduced midrange coloration
Wireless features:
  • Bluetooth 4.2 with aptX® for high-quality audio streaming performance
  • built-in dual-band Wi-Fi® for audio streaming from your network
  • compatible streaming platforms include Apple AirPlay® 2, Google Chromecast and Roon (firmware update required)
  • uPnP for playing music files from your local network
  • KEF Connect app offers comprehensive remote control via your Apple® or Android™ device
    • compatible with popular music streaming apps, including Spotify (via Spotify Connect), Tidal, Amazon Music, Qobuz, and Deezer
    • precise digital signal processing controls allow optimal room integration
Connections (located on primary speaker):
  • HDMI eARC (accepts signals up to 24-bit/192kHz) for improved sound from a compatible TV
  • Toslink optical digital input (24-bit/96kHz)
  • coaxial digital input (24-bit/192kHz)
  • RJ45 Ethernet port for network connection (24-bit/384kHz)
  • analog 3.5mm auxiliary input
  • USB Type A input (for service only)
  • mono RCA subwoofer output
  • supported file formats (all inputs): MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis
  • also supports DSD files up to 12.3 MHz and MQA files via network connection
Dimensions and warranty:

What's in the box:

  • 2 Wireless powered speakers
  • Two 6.5' AC power cords
  • 10' Cat-6 interconnect speaker cable
  • Remote control
  • 2 "AAA" batteries
  • Quick Start Guide
  • Important Safety Information
  • Warranty Information

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Crutchfield response

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More details on the KEF LS50 Wireless II

Stacey B.

Features & specs

Connections
Ethernet Port No
USB Port Service only
Aux Input 3.5mm
Phono Input No
Digital Input Optical, Coax
HDMI Input eARC
Headphone Jack No
Subwoofer Output Wired
Wireless Features
Bluetooth Built-in 4.2
Wi-Fi 802.11 a/b/g/n/ac
Wi-Fi Bands 2.4, 5 GHz
Driver Details
Tweeter Size (Inches) 1
Tweeter Type Hard-Dome
Tweeter Material Aluminum
Midrange Size (Inches) ---
Midrange Type ---
Woofer Size (Inches) 5.25
Woofer Type Aluminum
Audio Specs
Watts RMS (Continuous) 380
Watts Maximum (Peak) 760
Frequency Response 45-28k
Max. Digital Audio Bit Depth 32-bit
Max. Digital Audio Sample Rate 384 kHz
Control
Handheld Remote Yes
Control by app Apple iOS, Android
Amazon Alexa No
Google Assistant Optional
Other Specs
Width (Inches) 7.875
Height (Inches) 10.9375
Depth (Inches) 12.6875
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research

Audio Section
Network & Bluetooth Integration
Analog & Digital Inputs
Intuitive Control

Audio Section

24-Bit/384kHz DAC: The KEF LS50 Wireless II utilizes a 24-bit/384kHz DAC (digita-to-analog converter) for audiophile quality playback. The LS50 Wirless II supports digital music files up to 24-bit/384kHz, as well as MQA Decoding and DSD256. All sources are resampled to either 24-bit/96kHz PCM or 24-bit/192kHz PCM; depending on a wired or wireless connection between the LS50 Wireless II's two powered speaker.

  • MQA (Master Quality Authenticated): MQA is a revolutionary end-to-end technology that captures and delivers master quality audio in a file that's small enough to stream or download. MQA lets you hear your streamed digital music files exactly like the way the artist intended you to hear it when it was approved in the studio.
  • DSD (Direct Stream Digital): DSD is high-resolution digital audio format that uses a single bit to deliver a high resolution signal. Instead of sampling the information several thousand times a second, this single bit samples 2.8 million times a second to generate the audio signal. The result is still a Hi-Res audio signal that clean and pure.

Bi-Amplifier Configuration: 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 midbass drivers, for room-filling (up to 328 sq/ft), controlled sound up to 108db. The two powered speakers may be connected together either wirelessly or hard-wired.

  • Wireless Mode: LS50 Wireless II is pre-paired at the factory for easy setup in wireless mode. The wireless transmission is totally independent of the local WiFi signal. The minuscule delay (2.9ms) between the primary and secondary speakers in this mode is automatically accounted for, through an equal delay applied to the primary speaker. The wireless connection re-samples all audio to 24-bit/96kHz. Wireless Mode has a range of 26'.
  • Wired Mode: The wired interspeaker connection uses CAT-6 cable, plugged into the RJ45 sockets on the rear of the speakers. Cable mode must be enabled in the KEF Connect app settings menu. In this mode, all audio signals are resampled to 24-bit/192kHz. The included CAT-6 cable is 10' in length.

Note: Because the LS50 Wireless II is self-powered, each speaker will need to be plugged into an AC wall outlet. Two 6.5' detachable AC power cords are included.

Digital Signal Processing: All aspects of the LS50 Wireless II's performance is aided by KEF’s proprietary Music Integrity Engine. This collection of unique Digital Signal Processing algorithms is optimized for the Uni-Q driver configuration, enabling it to deliver a perfectly timed performance, for better imaging and a tighter sound.

Metamaterial Absorption Technology (MAT): KEF teamed up with the Acoustic Metamaterials Group (AMG) to use Metamaterial Absorption Technology (MAT) in their LS50 Wireless II powered speaker. Metamaterials are specially developed structures that use existing materials in such a way that they exhibit new, desirable properties that are simply not found in naturally occurring substances. A truly revolutionary technology, 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 acoustic performance.

12th Generation Uni-Q Driver Array: The LS50 Wireless II powered speaker utilizes KEF's patented 12th Generation Uni-Q driver configuration, in which the tweeter is mounted at the acoustic center of the midrange cone. With both acting as a single point source, the sound is dispersed widely and evenly throughout the listening area allowing you to experience superbly defined and perfectly balanced stereo imagery with a wide "sweet spot". Using simulation and analysis tools and decades of accumulated in-house knowledge, KEF engineers developed a 12th Generation Uni-Q driver array, with a new cone neck decoupler and motor system that is precisely shaped 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 same can also be said of bass performance, where LS50 Wireless II exceeds the expectations of a modestly proportioned bookshelf and standmount speakers to deliver room-filling sound with deep, articulate bass.

  • 1" Aluminum Vented-Dome Tweeter: The geometry of the tweeter dome matches that of the midrange cone to avoid disrupting the waveform. By smoothening high frequency response, this helps to account for the detailed and strikingly natural-sounding treble. The 1" aluminum vented-dome tweeter utilizes a Tangerine Waveguide to encourage the sound to radiate spherically for wider, more even dispersion so that everyone in the room enjoys the same superb sound quality. A large internal vent prevents potentially distorting high pressures from building up behind the dome in the critical vocal region, preserving all the nuance and fine detail of the original performance.
  • 5.25" Aluminum Cone Woofer: The 5.25" woofer uses an Aluminum cone that is light, stiff, and smooth for natural midrange and midbass sound. As well as allowing the midrange cone its full extension, KEF's ingenious Z-flex surround guides the sound from the tweeter across the surround without any disturbance or secondary radiation. Treble response is clearer and sweeter.

Advanced Cabinet Design: From the precision molded curved baffle to the solid, reinforced cabinet, every inch of LS50 Wireless II has been designed to perform. Every aspect of LS50 Wireless II has been considered for acoustic benefits and from a design perspective. The low-diffraction curved front baffle is subtly mirrored by the gently radiused rear panel, where both the port exit and speaker terminals have been elegantly recessed and softened visually.

  • Rigid Cabinet Bracing: The LS50 Wireless II’s extremely rigid cabinet is optimized for the best performance, with smooth curved surfaces that help radiate sound out across the baffle without any interference. Inside the cabinet, cross bracing and Constrained Layer Damping (CLD) combine to deaden internal vibrations. The result of such meticulous attention to detail is that LS50 Wireless II produces the lowest coloration of any speaker in its class.
  • Robust Curved Baffle: LS50 Wireless II's baffle is engineered from an injection-moulded Dough Moulding Compound (DMC), usually found in the automotive industry. The LS50 Wireless II's low-diffraction, curved baffle is precision modelled around the Uni-Q driver array. It’s smooth curved surfaces help radiate sound out across the baffle without any interference from hard edges, which cause diffraction. The result is cleaner, more precise sound.
  • Flexible Port Design: Using Computational Fluid Dynamics (CFD), the port flare and profile of LS50 Wireless II's patented off-set port is calculated to delay the onset of turbulence, and the flexible port walls prevent resonances from coloring the midrange. This leads to improved clarity, with exceptional depth and detail. Two foam port plugs are included to seal the cabinet if the bass is too "boomy" because of speaker placement.

Note: No grilles are included with the KEF LS50 Wireless II.

Dual Subwoofer Outputs: For even more impact and bass extension, LS50 Wireless II features two mono-RCA subwoofer outputs, to connect a powered subwoofer (sold separately - see Accessories Tab). The KEF Connect App (for Apple iOS 13.0+ and Android OS 8.0+) on your compatible smartphone or tablet device allows you to set the subwoofer outputs' Low Pass Frequency (50 to 120 Hz), Gain (-10 to 10 dB), and Polarity (On or Off). You can also set the speaker's High Pass Frequency (50 to 120 Hz).

Mounting & Placement Options: The speakers should be placed on a flat and level surface that is free from vibration, such as the KEF S2 speaker stands (sold separately). The two speakers are distinguished between the Primary Speaker and the Secondary Speaker. By default, the Primary Speaker is the right channel and should be placed on your right hand side as you face the speakers, while the Secondary Speaker is the left channel and should be placed on your left hand side as you face the speakers.

  • For the best stereo experience, soundstage and stable connection, place the speakers within 26' apart from one another.
  • The optimum distance between the speakers and the listener will depend on how far the Primary Speaker and the Secondary Speaker are separated.
  • Try to keep the same distance of the speakers to the listener so it forms an equilateral triangle.

Network & Bluetooth Integration

Wired or Wireless Network Connectivity: The KEF LS50 Wireless II can be connected to your home network via a wired (Ethernet) or wireless (WiFi) connection. There is a RJ-45 Ethernet port (10/100Mbps) on the back of the speaker which allows for a hardwired connection. Built-in 2.4/5GHz dual-band WiFi (802.11 a/b/g/n/ac) allows the LS50 Wireless II system to connect wirelessly to your home network. This network connection allows support for the KEF Connect App, Apple AirPlay 2, and Chromecast Built-In; plus Roon-Ready with future firmware update. You can select between 3 audio streaming settings based on your home network.

  • Hi-Fi (Hi-Fi quality): Always select this setting for the best audio quality. The highest quality depends on the music streaming service and your subscription.
  • High (CD Quality): Select this setting when the speakers are in a crowded network and experiencing quality drop-outs.
  • Normal (MP3 Quality): Select this setting when the speakers are in a crowded network and experiencing audio drop-outs.

Notes:

  • For better streaming stability, especially on hi-resolution music files, a 5GHz WiFi network with a router transmission speed of at least 1300 Mbps is recommended.
  • The KEF LS50 Wireless II must always be first connected to your local network before you are able to use any of the speaker's wired or wireless source inputs.

Online Music Services & Internet Radio: The KEF LS50 Wireless II provides access to Amazon, Deezer, Qobuz, Spotify, Tidal, and vTuner through the KEF Connect App (for Apple iOS 13.0+ and Android OS 8.0+) on your compatible smartphone or tablet device.

  • Amazon Music: Amazon Music has a growing selection of over 2 million songs is always ad-free and on-demand, with curated playlists, personalized stations and unlimited skips. Upgrade to Prime Music Unlimited, and enjoy 10 million songs, weekly new releases, and more.
  • Deezer: With 43 million tracks, 100 million playlists, and a presence in 182 countries, Deezer literally covers the globe for its subscribers. Subscriptions start at $9.99/month, and include ad-free playback, premium audio quality, and more.
  • Spotify Connect: The KEF LS50 Wireless II offers Spotify Connect support, so you can stream millions of songs from your portable device with ease. You will need to subscribe to Spotify Premium and have the Spotify App on your Apple iOS or Android smartphone, so you can stream Spotify to the LS50 Wireless II system. Spotify is a digital music service that gives you on-demand access to one of the largest music libraries in the world (over 15 million tracks and counting). Spotify makes it easier than ever to discover, manage, and share music with your friends. You can browse music by artist, album, track, or most popular; and create your own music library with customized playlists.
  • TIDAL Connect: The integration of Tidal Connect will enable Tidal users to instantly select and wirelessly stream music to the LS50 Wireless II from within the Tidal app (for Apple iOS and Android OS). TIDAL is a global streaming service that offers over 30 million songs in high-fidelity CD sound quality. TIDAL has two pricing tiers; either $9.99 or $19.99 a month. Both pricing levels allow you to access TIDAL's entire music library. The $19.99 tier has the added benefit of high-fidelity sound at CD-level quality.
  • Qobuz: Qobuz offers the biggest catalog of Hi-Fi and Hi-Res albums in the world, both for new releases and specialized genres. For hundreds of thousands of albums, Qobuz includes all the information you need to recreate the appeal of a real CD - the names of musicians, producers, lyrics (everything you need to know to appreciate your favorite albums). Qobuz offers MP3, CD, and Hi-Res quality subscriptions.
  • Internet Radio (vTuner): You have the ability to access thousands of internet radio stations through vTuner and save your favorite presets for easy access. Supported Internet Radio formatted content includes MP3, AAC, Ogg Vorbis and MMS.

Chromecast built-in: Use the Google Home App (for Apple iOS 12.0+ and Android OS 6.0+) to enable Chromecast built-in. Chromecast built-in gives you access to hundreds of online music streaming services, internet radio, and podcasts. Chromecast built-in streams audio directly from the cloud, so you get the 24-bit/96kHz sound quality and the ability to enjoy crystal clear sound exactly the way the artist intended. Simply tap the Cast button from a Chromecast built-in compatible music app on your Apple iOS or Android OS device to start streaming to the KEF LS50 Wireless II speaker system. You can search, browse, play, skip, and turn up the volume directly from the music apps you know and love on your compatible smartphone or tablet. Chromecast built-in supports FLAC, WAV, AAC, and MP3 music files. While you cast your music, you can still use your smartphone to answer a call, play a game, send a text, and even leave the room - all without interrupting what's playing on the KEF speaker system.

  • Music, Radio, & Podcasts: Chromecast built-in lets you play music from popular music services and search by artist, song, genre, album playlist, mood, or activity. You can also listen to your favorite internet radio stations and podcasts. Compatible music and internet radio apps include Tidal, Spotify, Pandora, TuneIn, GooglePlay Music, iHeart Radio, YouTube Music, and more (subscriptions and fees will apply). You'll also be able to stream your favorite music, playlists, podcasts, and more that are stored on your Android (OS 4.4.2+) device to the LS50 Wireless II speaker. You cannot stream stored content on an Apple iOS device using Chromecast built-in. If you're on your laptop or computer, you can also cast any music streaming website through the Chrome web browser to the speaker.
  • Multiroom Audio: Add more Chromecast built-in speakers throughout your home (sold separately - see Accessories Tab) to create a whole house audio experience. You can play the same Chromecast built-in compatible music app (like Tidal, Spotify, or Pandora) on all speakers or groups of speakers in different rooms of your home. You'll be able control the multiroom audio system from the Google Home app on your Apple iOS or Android device, or using the Google Assistant and your voice on a compatible Google Home device.
  • Voice Control (Optional): Purchase a Google Home wireless speaker (sold separately - see Accessories Tab) and gain voice control of compatible Chromecast Built-in music apps. You'll be able to access a specific music app and then select a specific station or song using only your voice. You'll also have voice control over Play, Pause, Skip, & Volume. The LS50 Wireless II and your Google Home speaker must be connected to the same wireless (WiFi) network.

Note: Chromecast built-in currently supports a single account per user (up to 6) and streaming service. Click here for a complete list of Chromecast built-in compatible apps.

AirPlay 2: AirPlay 2 is an advanced and easy-to-use wireless multiroom audio platform for iTunes, Apple Music, and other compatible Apple iOS apps. With AirPlay 2 you can play any sound from your Apple iOS device (running iOS 11.4 or later) or Mac computer (running OS X 10.13.2) through the KEF LS50 Wireless II speaker system and other compatible AirPlay 2 speakers throughout your home. You can choose to play audio in one room, play the same audio in grouped rooms, or play the same audio in every room. If you are an Apple Music subscriber, you can even play different music in different rooms (you can control and group directly from Apple's Music App and Home app on your Apple iOS device). You can even ask Siri-enabled devices (like your Apple iPhone, iPad, or Watch) to control playback of your Apple Music on the KEF LS50 Wireless II. In addition, you can watch videos and movies from YouTube and Netflix on your compatible Apple iOS device or Mac computer with perfectly synced audio on the LS50 Wireless II speaker system.

UPnP (Universal Plug-n-Play): The KEF LS50 Wireless II is UPnP compatible, which enables you to play your digital music library stored on UPnP servers (such as a network server with integrated UPnP software,Windows PC, or Mac OS X computer) through the LS50 Wireless II speaker system. You can stream a variety of compressed, lossless, and high-res music files. UPnP file browsing can be carried out using the KEF Connect App (for Apple iOS and Android). The LS50 Wirless II supports streaming digital music files up to 24-bit/384kHz, as well as MQA Decoding and DSD256. Supported music file formats include - MP3, AAC, FLAC, WAV, AIFF, ALAC, WMA, DSD, MQA, LPCM and Ogg Vorbis.

Note: Windows Media Player version 11 or above incorporates built in UPnP support. A variety of third party UPnP applications are available that are compatible with both Windows and OS X operating systems.

Roon Ready (Future Firmware Update): Roon is a feature rich music library and playback application that compiles all the music files available to your network and makes them easily available to play across the KEF LS50 Wireless II speaker system and other Roon enabled audio devices. Roon manages digital music files (including FLAC, WAV, AIFF, ALAC, and DSD) collected on hard drives and networked storage. It can also access your iTunes library, and optionally integrate with the Tidal music streaming service. Roon is available for mobile, laptop or desktop devices. When you open the Roon app, it will display your complete audio library together with its metadata and artwork along with the KEF LS50 Wireless II and all other Roon enabled devices. Simply select the music you wish to play and the LS50 Wireless II or Roon device in which you want to hear it on.

Note: To use Roon you will need a Roon Core running on the same network as the KEF LS50 Wireless II speaker system. The Core is media server software that runs on your computer, NAS, or player (sold separately) located on the network within your home.

Bluetooth 4.2: With built-in Bluetooth 4.2 and support for wireless audio streaming (A2DP), you are able to wirelessly stream stored music, music apps, and other audio content from your Bluetooth enabled smartphone, tablet, laptop, or computer to the KEF LS50 Wireless II speaker system. With SSP (Simple Secure Pairing), Bluetooth source devices can be paired with a single press of a button and without entering a PIN code. Multiple devices can be paired with the LS50 Wireless II speaker system, but only one device can be connected and playing at a time. You'll still need to control music playback and view song/artist/album info from your Bluetooth source device.

Notes:

  • The LS50 Wireless II must be first connected to your local network before it can be used as a Bluetooth speaker.
  • The KEF LS50 Wireless II speaker system does not support Bluetooth hands-free communication for making and answering phone calls.

Analog & Digital Inputs

HDMI eARC: The KEF LS50 Wireless II is outfitted with a HDMI eARC jack for connection to your TV's HDMI eARC or ARC input, so you can playback your TV's audio signal through the LS50 Wireless II speaker system. The HDMI eARC jack supports 2ch PCM audio up to 24-bit/192kHz.

Notes:

  • The LS50 Wireless II's HDMI eARC jack must be connected to a TV's HDMI ARC or eARC input; it will not work with a standard HDMI input.
  • The HDMI eARC jack does not support Dolby Digital, DTS, or other multi-channel formats.
  • The HDMI input does not support video.
  • The LS50 Wireless II must always be first connected to your local network before using the HDMI connection.

Optical & Coaxial Digital Inputs: The KEF LS50 Wireless II is equipped with two digital audio inputs. There is one optical (toslink) digital input and one coaxial (RCA) digital input. The optical digital input supports 2ch PCM audio up to 24-bit/96kHz, while the coaxial digital input supports 2ch PCM audio up to 24-bit/192kHz.

Notes:

  • The optical and coaxial digital inputs do not support Dolby Digital, DTS, or other multi-channel formats.
  • The LS50 Wireless II must always be first connected to your local network before using the optical or coaxial digital inputs.

Analog Input: The LS50 Wireless II also features an analog stereo minijack (3.5mm) audio input. This is a line-level input (not a Phono input). If you want to connect a turntable, you'll need an external phono preamplifier (sold separately) or a turntable with a built-in phono preamp.

Note: The LS50 Wireless II must always be first connected to your local network before using the analog Aux input.

USB-A Input: There is a USB (Type-A) input that is used only for service purposes only. It does not offer media playback or charging.

Intuitive Control

KEF Connect App: The KEF Connect app (for Apple iOS 13.0+ and Android OS 8.0+) provides setup and control of the LS50 Wireless II system from your compatible smartphone or tablet device. The KEF Connect app also gives you access to a variety of online music service and internet radio stations.

  • Wireless Setup: The KEF Connect app allows simple and quick connection of the LS50 Wireless II to your home's wireless network router.
  • Online Music Services: The KEF Connect app provides access to Amazon HD, Deezer, Qobuz, Spotify, Tidal, and vTuner.
  • Playback Control: From the app, you can control playback volume, and input source selection.
  • Audio Optimization: The app lets you optimize your listening experience through its EQ settings; allowing you to adjust the output of the speaker to better suit the room and your personal taste.
  • Timers & Alarms: The app also lets you customize settings such as sleep timer, auto-wake up source, and child lock

Note: The KEF LS50 Wireless II does not work with older KEF apps - such as the KEF Control and KEF Stream apps.

IR Remote: The included IR remote provides basic wireless operation of the KEF LS 50 Wireless II speaker system. The IR remote provides the following control functions - Power On/Off, Source Selection, Volume Up/Down, Mute, Play/Pause, and Previous/Next Track.

Top-Panel Controls: Top-panel capacitive touch controls on the Primary Speaker (Right) include Power On/Off, Source Selection, Volume Up/Down, and Mute.

EQ Settings: For the best audio performance, apply sound settings from the KEF Connect app according to your listening area. EQ settings include - Desk Mode (-10 to 0 dB), Wall Mode (-10 to 0 dB), Treble Trim (-4 to 4 dB), Phase Correction (On or Off), Bass Extension (L/M/H), High Pass Frequency(50 to 120Hz), Sub Out Low Pass Frequency (40 to 240Hz), Sub Gain (-10 to 10 dB), and Sub Polarity (On or Off)

Auto Firmware Updates: Automatic firmware updates are done over your home's local network using the KEF Connect app (for Apple iOS 13.0+ and Android OS 8.0+).

 

 

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Customer Q&A

10 questions already asked

Q
Are there photos of the scratch / sent of this product I can see before purchasing ?
[ Zaher  Jul 08, 2021 ]
1 answer
A
No, but Crutchfield has good return policy. My LS50s were a perfect condition, and don't know why they sold as 'scratch/dent' item.
[ SUNG HO  Jul 08, 2021 ]
Q
How can I wirelessly connect from my DAC to these speakers?
[ William  Jan 05, 2021 ]
4 answers
A
I can't answer that, but I can say that, for the money, there is probably not a better powered speaker on the market.
[ Raymond  Jan 05, 2021 ]
A
Depends on what you are trying to do. If you want your DAC to output wirelessly you will have to buy a special RCA wireless transmitter, and that may defeat the purpose of a nice DAC. If you want to directly connect your DAC to the speakers you could stream to it via a streamer such as the bluesound node. Honestly, I think the internal steaming and DAC of these are quite good and you shouldn't need to do this at all.
[ KAI  Jan 05, 2021 ]
A
You can't connect a DAC to a wireless speaker.
[ Wei  Jan 05, 2021 ]
A
You don't mention what DAC you have, so I will assume it's not one with bluetooth, in that case look for a bluetooth transmitter with aptX. Although IMO, if you're going to use bluetooth you may as well go with Sonos or even a couple of now discontinued but easily "gettable" Google Max speakers.
[ Jason  Jan 05, 2021 ]
Q
I know these are not outdoor speakers but how would they hold up in a covered outdoor area? They would not get wet but they would be subjected to heat and humidity. Thanks.
[ Paul  Nov 16, 2020 ]
3 answers
A
To put these or any other speakers NOT designated as for outdoor use is a disaster waiting to happen, whether they're undercover or not! Speakers should NOT be subject to large variations in temp or humidity unless they're specifically designed for it.
[ Psychranger  Dec 23, 2020 ]
A
They look pretty durable, but can't answer for the electronics inside.
[ JOHN M  Nov 16, 2020 ]
A
I did not have them outside but would not recommend it, just common sense.
[ IOURI  Nov 16, 2020 ]
Q
Are the KEF ls50 wireless II 110 to 240V?
[ Alfredo  Apr 23, 2021 ]
1 answer
A
Yes, it is 110-220v automatic voltage
[ SUNG HO  Apr 23, 2021 ]
Q
I currently have, and love, the LS50W Nocturne's. Would these be an incredible improvement in a home office to sell and upgrade? It is connected USB to the PC, streamed with Tidal.
[ David  Nov 28, 2020 ]
4 answers
A
I had the LS50 Wireless Nocturne for about 10 months. The internal amps of the left channel failed and I sold the set after the repair. Quite a few owners have had similar problems with the LS50W, too. KEF has only a 1-year warranty on the internal electronics. That's a red flag to me. Of course, many others have had no such trouble with their LS50W, so take my experience as an individual case. I bought a pair of the new LS50 Meta and am very pleased with the sound. Driven by a good amp + DAC, the LS50 Meta are very comparable with the wireless, IMO.
[ Jeff  Dec 20, 2020 ]
A
The new LS50 Wireless II is clearly better than the first version. I bought both the first and second generation from Crutchfield. While the sound quality is better with the second version, that is not the major reason to upgrade. I was thrilled with the first version and I am more than thrilled with the second version, although I admit that I must say that the sonic increase while real, is modest. However the second version is much, much better in a host of areas. The app (Kef Connect) is much better and actually works. I did have to buy a new tablet because my old Samsung Tab S2 was too old to download the Kef Connect app. This is listed only in a footnote in the manual. You might check if this could be a problem for you. I primarily use Roon and Tidal. The speakers are not currently Roon Ready. That means that Roon currently will not connect to the speakers at all. Kef says that this is coming. In the first version of the LS 50w the integration of Tidal came a few months after I bought the speaker, so I am confident that the new speaker will be Roon Ready soon. In the mean time, I have purchased a Topping D10s DAC ($99) which brilliantly solves two problems. The new LS50 Wireless II no longer has a USB input. I run a USB cable from my computer to the Topping DAC and then Spdif from the DAC to the LS50 Wireless II. Sound quality is flawless. To my surprise, Roon recognized the Topping DAC. This allows me to use Roon on my desktop and utilize the Topping DAC as a Roon Endpoint. This solves the problem of the speakers not yet being Roon Ready. Also, I have a lifetime subscription to Siriusxm. I listen to Siriusxm through the Topping DAC and the sound quality is not bad. I also use Spotify Connect and the sound quality is excellent. The only time I can hear any difference between Spotify and Tidal is the MQA Tidal master recordings, which are audibly better. This could be due to better recording or the MQA process, I don't know. The first version of the LS50w allowed for Spotify Connect, which greatly improved the sound. The second generation of the LS50 wireless now also allows connection to Tidal Connect, which like Spotify Connect greatly improves the signal. Both of these signals are sent directly from the router to the speakers, avoiding the tablet. The audio quality is much, much better in this connection. Finally, the new Kef Connect app connects to most music services (Apple, Amazon, etc.) and includes a comprehensive radio app. It found all my local and national stations. I recommend viewing two Utube videos: John Darko and Steve Guttenberg. Both, rightly, rave about the LS 50 upgrades and they explain nicely the new meta technology.
[ STEVE  Dec 14, 2020 ]
A
The speakers sound wise would be an improvement.....incredible would be a stretch but noticeably punchier bass and clean highs.....the incredible improvement is in the use of KEF Connect software. The software is MUCH better and interfaces well with the music services. The old 2 part KEF software just didn't work for me...at all. Also, if you plan on hooking up a tv the new speakers have hdmi/earc which works seamlessly with my tv. Also, the software allows you to set a second auto on with the first being wifi and I set the second auto on to my tv so it's all seamless.
[ HARVEY  Dec 05, 2020 ]
A
I would say it isn't an incredible upgrade just 10-20% better to my ears, also the W2 system lacks usb connectivity, so you'd either need to run an external DAC with usb input running to the W2 aux port, or stream wirelessly from your pc with tidal connect. Hope this was helpful.
[ EMERY  Dec 04, 2020 ]
Q
is Apple music lossless streaming supported?
[ louis  Jul 08, 2021 ]
2 answers
A
I've never tried the new service but they are capable of playing and streaming Apple lossless format. It's an older format all high res devices can play. Not sure exactly how it's delivered because I don't think airplay supports resolution higher than 16/44.1 so you probably vant use airplay and get high res. Probably have to use the kef app logged into Apple Music.
[ Stephen  Jul 09, 2021 ]
A
You can stream via Apple Air Play, but Apple Music is not supported at this time. Contact KEF support, they might be working on adding Apple Music in the future.
[ JORGE  Jul 09, 2021 ]
Q
Would you recommend these for near-field listening (on a desktop on either side of my computer monitor with about 3' distance to ears) in a small 10'x10' room? Or do these really require a larger space to do their thing?
[ Ranjith  Mar 22, 2021 ]
2 answers
A
I am using the Kef ls 50 wireless II as nearfield desktop speakers. They are fabulous.
[ STEVE  Mar 22, 2021 ]
A
I cannot address any question of taste or listening preferences, but for starters, you should read the specs and take note of the dimensions of these speakers. They are not small; they have a footprint larger than a shoebox, and they are heavy. Running them at low enough volume to avoid blasting your eardrums at such close range would be wasting their potential, in addition to probably sacrificing sound quality. I have these speakers at about 60% volume in a 20' X 20' room, listening from about 15 feet away, for comparison, and that's loud enough to drown out AC and fan noises in that room.
[ Dale  Mar 22, 2021 ]
Q
Will two KEF LS50 II speakers fill up a 20' by 20' room with high ceilings?
[ James  Feb 07, 2021 ]
8 answers
A
I think you might want a good pair of towers.. I have a similar space for the living room here with high ceilings. The ls50w2 will do good job, but wont give you what a good tower can
[ OSWALDO  Feb 07, 2021 ]
A
My living room is about 18'x17' with 8' ceiling. LS50W II is loud enough but the bass is not rich IMO. I am considering to add a KEF KC62 when it is available.
[ SUNG HO  Feb 07, 2021 ]
A
I have mine in a 18x22 family room with an open floor plan with an adjoining kitchen. I think they sound great.
[ STEPHEN H  Feb 07, 2021 ]
A
That's a large room for these speakers...I have these in a 15'x18' foot room with 8' ceilings......they work well in that setting....if the room were larger I think they would get lost or sound a bit thin....you can't go against the laws of physics....
[ HARVEY  Feb 07, 2021 ]
A
Not in my opinion. They image well. They are portable. They don't really have the oomph for that much room volume. But, I like it loud. Why do you want such small speakers?
[ Dolly  Feb 07, 2021 ]
A
Yes, plenty of presence and power.
[ JOHN M  Feb 07, 2021 ]
A
Yes!
[ Bradley J  Feb 07, 2021 ]
A
They will but sound much better with KEF kube 10b. Speakers are very clear but in a room of that size, base does not come through.
[ ALEX  Feb 07, 2021 ]
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