KEF LS50 Wireless II Loudspeakers & S2 Stands – Carbon Black

Here we have a nice pair of KEF LS50 II active loudspeakers that come complete with their dedicated S2 stands. Based on the award winning passive LS50 these speakers provide superb sound quality without all shortcomings of a traditional hi-fi system. They come in good condition with a few small blemishes on the speakers – please see photographs. They are supplied in original factory packaging along with remote control, manual, mains cables, ethernet cable, spikes and our standard three month warranty.
KEF Say….
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.
The multi-award winning LS50 Wireless sets the bar high for high-performance wireless speakers, and in the same spirit of invention and innovation that created the original, the LS50 Wireless II is much more than just a new generation.
The result of three years intensive research and development, the new KEF LS50 Wireless II is a fully active wireless stereo speaker system that delivers pristine, KEF signature sound coupled with great usability and high-performance wireless capability. LS50 Wireless II has been built on a whole new acoustic platform, the LS50 Meta passive loudspeakers, while the brand-new wireless platform has been engineered from the ground up. Active electronics, Digital Signal Processing (DSP), wireless streaming platform and the new KEF Connect app all combine to set a new benchmark of class-leading acoustic and user experience.
The new wireless platform that sits at the digital heart of the LS50 Wireless II ensures that no matter how you like to listen to your music, you will be able to do so with the minimum of fuss and in fantastic sound quality. LS50 Wireless II gives you direct access to your favourite music services, including Spotify (via Spotify Connect), Tidal, Amazon Music, Qobuz and Deezer. You can even tune in to Internet Radio Stations and catch up on the latest podcasts through the KEF Connect app. AirPlay 2 and Google Chromecast seamlessly connects your compatible Apple or Android device, whilst Bluetooth expands the options even further. There are also wired connections for your TV, turntable, CD player and games console, via the HDMI, analogue, optical and coaxial inputs.
LS50 Wireless II has audiophiles covered with support for streaming music files up to 24bit/384kHz, as well as MAQ, DSD256, and ROON Ready. These features mean that even the experienced hi-fi enthusiast will marvel at this exceptional loudspeaker’s ability; LS50 Wireless II really does offer something to everybody.
LS50 Wireless II is more than a high-fidelity speaker system – it is designed to enhance your everyday life. Seamlessly integrate LS50 Wireless II into your smart home to browse and play music, select sources, or use controls such as play, pause, and adjust the volume via your smart home app or control interface.
Even beyond the flawless musical performance, the LS50 Wireless II is a breeze to set up, intuitive to use and offers over-the-air firmware updates for bringing you new and improved features with the minimum of fuss. You can choose to connect the speakers with the supplied cable (24bit/192kHz resolution) or wirelessly (with 24bit/96kHz resolution) for a completely clutter-free set up. You can even select your favourite source to wake up LS50 Wireless II whenever it comes on, giving you immediate access to your favourite source. Plus, when using AirPlay 2, Chromecast or ROON you can stream to multiple speakers, so you can play music all over your house. The brand-new dedicated KEF Connect app walks you through the set-up and controls the system on a day-to-day basis, including intuitive sound settings, so you can tune LS50 Wireless II to your own personal tastes.
When it comes to physical technology, LS50 Wireless II takes its lead from KEF’s LS50 Meta passive loudspeakers. A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption 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 sound.
KEF’s Uni-Q point source configuration delivers a more detailed, accurate and integrated three-dimensional sound image, which is dispersed so evenly throughout the room that the ‘sweet spot’ is wherever you are in the room. Using simulation and analysis tools, our engineers have developed the 12th generation Uni-Q with MAT driver array, 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 other frequencies are equally well served, with crystal clear midrange and room-filling, deep and articulate bass.
The performance of LS50 Wireless II is aided by KEF’s bespoke Music Integrity Engine, a cutting-edge collection of bespoke Digital Signal Processing algorithms optimised for the new Uni-Q with MAT driver array, enabling it to deliver a perfectly timed performance, for better imaging and a tighter, unsmeared sound.
LS50 Wireless II also has plenty of power on tap. Each tweeter benefits from being driven by a new 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. The diligent amplifier development has all been undertaken in-house by KEF, in order to completely control the quality of power on offer. The end result of this tireless effort is sensationally dynamic sound, with the music’s subtle ebb and flow delivered in all its glory.
The LS50 Wireless II will also fit comfortably into your living space when it comes to style. The low diffraction, curved baffle is precision modelled around the Uni-Q driver array, while eye-catching heat sinks and colour-matched ports are located on the well-equipped rear. LS50 Wireless II is available in three matt finishes, Carbon Black, Titanium Grey, Mineral White as well as a Crimson Red Special Edition. All the colours are mirrored on both the drive units and the rear-facing port means the LS50 Wireless II looks fantastic from any angle.
On the LS50 Wireless II’s underside, each corner has a threaded inset allowing the speaker to lock onto the top of the new KEF S2 Floor Stands, which also boast integrated cable management and a mass-loadable column. The stands are all colour matched to your finish of choice.
For even more impact and bass extension, LS50 Wireless II features two subwoofer outputs, one on each speaker. When paired with KEF’s KUBE range or KF92 subwoofers, music and film becomes even more impactful.
Specifications:
Drive Units: Uni-Q Driver Array: LF: 130 mm aluminium cone; HF: 25 mm vented aluminium dome with Metamaterial Absorption Technology
Frequency Range (-6 dB) Measured at 85 dB/1 m: 40 Hz – 47 kHz
Frequency Response (±3 dB) Measured at 85 dB/1 m: 45 Hz – 28 kHz
Amplifier Output Power (Per Speaker): LF: 280 W; HF: 100 W
Amplifier Class: LF: Class D; HF: Class AB
Max SPL Measured at 1 m: 108 dB
Wireless Streaming Features: AirPlay 2; Google Chromecast; ROON Ready; UPnP Compatible; Bluetooth 5.0
Source Resolution: Network up to 384 kHz/24 bit; Optical up to 96 kHz/24 bit; Coaxial up to 192 kHz/24 bit; HDMI up to 192 kHz/24 bit
Interspeaker Connection: Wireless: all sources resampled to 96 kHz/24 bit PCM; Wired: all sources resampled to 192 kHz/24 bit PCM
Supported Format (All Inputs): MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis
Home Automation System: Elan, RTi, Crestron Home, Savant, Control4, URC
Supported Format (Network): MQA; DSF: DSD64, DSD128; DFF: DSD64
Power Input: 100 – 240 VAC 50/60 Hz
Power Consumption: 200 W (operating power); <2.0 W (standby power)
Streaming Services: Spotify via Spotify Connect; Tidal via Tidal Connect; Amazon Music; Qobuz; Deezer; QQ Music via QPlay (coming soon); Internet Radio; Podcast
Primary Speaker Inputs: HDMI eARC; TOSLINK Optical; Digital Coaxial; Analogue 3.5mm Auxiliary; USB Type A (service); RJ45 Ethernet (network); RJ45 Ethernet (interspeaker)
Output: RCA Subwoofer output
Wi-Fi Network Frequency Band: Dual-band 2.4 GHz / 5 GHz
Secondary Speaker Inputs: USB Type A (service); RJ45 Ethernet (interspeaker)
Dimensions: 305 (H) x 200 (W) x 311 (D) mm
Weight: 20.1 kg (per set)
The S2 Floor Stand provides the perfect platform for your speakers to perform. Designed to partner LS50 Meta, LS50 Wireless II, and other KEF standmount speakers, they boast a mounting system with integrated cable management that allows wires to be hidden, and spike discs to protect wooden floors.
The S2 Floor Stands are designed by our UK engineering team to ensure your speakers sound their best, and deliver pristine, room-filling sound. They are the ideal height for driver positioning, and their steel plates and fillable aluminium tube structure provide the perfect platform.
The S2 Floor Stand’s five colours perfectly match the finishes of the LS50 Meta bookshelf speakers and LS50 Wireless II hi-fi speakers.
Features:
Integrated cable management system cleanly conceals all cables
Steel and aluminium construction provides rigidity and stability
Space available for the addition of inert filler for further stability
Specifications:
Dimensions: 657 (H) x 226 (W) x 308 (D) mm
Weight: 4.85 kg per stand

To read a review from What Hi-Fi? magazine please click here