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KEF LS50 Wireless II Carbon Black Bookshelf Speakers (Pair) - SP4025BC
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Abt Model: LS50WIIBK
UPC: 637203046964
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KEF SP4025BC LS50 Wireless II Carbon Black Bookshelf Speakers (Pair)
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 Metamaterial Absorption Technology (MAT ™) delivers reduced coloration, less distortion, and a sound that is more transparent and life-like than previously possible.
Features
Freedom - 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. These features mean that even the experienced hifi enthusiast will marvel at this exceptional loudspeaker’s ability.
User-Centred - 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 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.
Performance - Most Accurate, Immersive Sound
- LS50 Wireless II features KEF's 12th generation Uni-Q driver with Metamaterial Absorption Technology (MAT ™) 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 class A/B amplifier that delivers a smooth, incredibly detailed treble performance. Dedicated class D amplifiers power the mid/bass drivers, for room-filling, controlled sound up to 108db.
Design - 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. - Listen and believe
Really great loudspeakers simply melt away, leaving you with just the music. A pristine voice, perfectly rendered layers of instruments you can lose yourself in, sound so clear it’s as though the artist is there with you. This is what great loudspeakers with the best technology deliver.
California customers:
General
Color
Black
Bluetooth
Yes
Bluetooth Version
4.2
Wi-Fi
Yes
Speaker Phone
No
USB Port
Yes
Number Of USB Inputs
2
NFC
No
Water Resistant
No
Rock Speaker
No
Number of Speakers In Set
2
Waterproof
No
AirPlay
Yes
Digital Display
No
Aux Input
Yes
App Controlled
Yes
File Format
MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM Ogg Vorbis
Audio Formats
MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis
Power Consumption
200W
Power Consumption (Standby)
< 2.0W
Optical Digital Input
Yes
Rechargeable
No
SonosNet
No
Control Button(s)
Yes
Microphone Mute
No
Streaming Services
Spotify, Apple Music, QQ Music, Amazon Music, TIDAL, TIDAL Connect, qobuz, deezer, Internet Radio, Podcasts
Coaxial Digital Input
Yes
HDMI Input
Yes
HDMI Audio Return Channel (ARC)
Yes
4K Video Passthrough
No
8K Video Passthrough
No
Remote Control Included
No
Wireless Subwoofer
No
Input(s)
1 x HDMI eARC, 1 x TOSLINK Optical, 1 x Digital Coaxial, 1 x Analog 3.5mm Auxiliary, 1 x USB Type A (service), 1 x RJ45 Ethernet (network), 1 x RJ45 Ethernet (interspeaker)
Output(s)
RCA Subwoofer
HDR Support
No
Tweeter Size (in)
1
Tweeter(s)
1 x 1" Vented aluminum dome with Metamaterial Absorption Technology
Tweeter(s) Material
Aluminum
Midrange Size (in)
5.25
Midrange(s)
1 x 5.25" Aluminium cone
Wireless Multi-Room Audio
Yes
Center Speaker
No
Side-Firing Speaker
No
Up-Firing Speaker
No
Dolby Atmos
No
DTS: X
No
Amplifier Type
LF: Class D, HF: Class AB
Connectivity
HDMI eARC, TOSLINK Optical, Digital Coaxial, Analog 3.5mm Auxiliary, USB Type A (service), RJ45 Ethernet (network), RJ45 Ethernet (interspeaker)
Frequency Response
45Hz - 28kHz
Powered / Passive
Powered
Speaker Design
2-Way
Speaker Type
Bookshelf
Voltage
100 - 240 Volts
Warranty Information
Parts Warranty
2 Years Limited
Labor Warranty
2 Years Limited
Approximate Weight
Unit Weight (lbs.)
44.3
Package Weight (lbs)
53
Approximate Dimensions
Height (in)
12
Width (in)
7.9
Depth (in)
12.2
Package Size HxWxL (in)
16 x 17 x 24
Frequently Asked Questions
-
Supports Wi-Fi with 2.4GHz and 5GHz dual-band networks, Bluetooth 4.2, Apple AirPlay 2, Google Chromecast, and is Roon Ready, allowing seamless integration with most wireless streaming services and devices.
-
Plays a wide range of audio formats including MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM, and Ogg Vorbis. This ensures compatibility with nearly all high-quality audio files for audiophiles and casual listeners alike.
-
Offers multiple wired inputs such as HDMI eARC, TOSLINK Optical, Digital Coaxial, Analog 3.5mm Auxiliary, USB Type A for service, and dual RJ45 Ethernet ports for network and interspeaker connections. Includes RCA subwoofer output but no wireless subwoofer support.
-
Yes, it features dedicated apps for both iOS and Android, allowing easy setup, firmware updates, sound customization, and source selection for a personalized listening experience.
-
Yes, it supports wireless multi-room audio using AirPlay 2, Google Chromecast, and Roon, enabling synchronized audio playback across multiple speakers throughout your home.
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