LS50 Wireless II

WHAT HI-FI? AWARDS 2021 - 'PRODUCT OF THE YEAR'

“These sequels are among the most thrilling speaker systems we’ve heard.” - October 2021, What Hi-Fi?

FULL REVIEW

Freedom

All the music, all the time

Play all major music services and supports all major audio formats

Wireless both from source and between the speakers

Comprehensive applications and connectivity

User-Centred

Let you be you

Intuitive on-boarding with user-centred features

Personalised listening experience via KEF Connect App

Performance

Most accurate,immersive sound.

Metamaterial Absorption Technology for pure, natural sound

12th generation Uni-Q with MAT for exceptional acoustic accuracy

Music Integrity Engine for rich, full-bodied sound

System power: LF 280W class D, HF 100W class A/B, Max. SPL: 108dB

Design

Attention to every detail

Optimised cabinet design for best acoustic performance

Available in 4 finishes

With mounting inserts to secure on KEF S2 Floor Stand (available as separate item)

The Details

SPECIFICATIONS

Model

LS50 Wireless II

Dimensions (HWD per Speaker)

305 x 200 x 311 mm (12 x 7.9 x 12.2 in.)

Weight (per set)

20.1kg (44.3lbs)

Drive Units

Uni-Q Driver Array:
LF: 130 mm (5.25 in.) aluminium cone
HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology

Amplifier Class

LF: Class D
HF: Class AB

Max SPL Measured at 1m

108 dB

Frequency Response (±3dB) Measured at 85dB/1m

45 Hz – 28 kHz
*Depends on EQ settings

Frequency Range (-6dB) Measured at 85dB/1m

40 Hz – 47 kHz
*Depends on EQ settings

Home Automation System

Elan, RTi, Crestron Home, Savant, Control4, URC

Primary Speaker Inputs

HDMI eARC
TOSLINK Optical
Digital Coaxial
Analog 3.5mm Auxiliary
USB Type A (service)
RJ45 Ethernet (network)
RJ45 Ethernet (interspeaker)

Secondary Speaker Inputs

USB Type A (service)
RJ45 Ethernet (interspeaker)

Output

RCA Subwoofer output

Interspeaker Connection

Wireless: all sources resampled to 96kHz/24bit PCM
Wired: all sources resampled to 192kHz/24bit PCM

Wireless Streaming Features

AirPlay 2
Google Cast
ROON Ready
UPnP Compatible
Bluetooth 5.0
Plays with Audirvāna

Streaming Services

Spotify via Spotify Connect
Tidal via Tidal Connect
Amazon Music
Qobuz
Deezer
QQ Music via QPlay (coming soon)
Internet Radio
Podcast

*Depends on services availability in different countries

Supported Format (All Inputs)

MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis

Source Resolution

Network up to 384kHz/24bit
Optical up to 96kHz/24bit
Coaxial up to 192kHz/24bit
HDMI up to 192kHz/24bit

*Depends on source resolution

Supported Format (Network)

MQA
DSF: DSD64, DSD128
DFF: DSD64

Wi-Fi Network Standard

IEEE 802.11a/b/g/n/ac
IPv4, IPv6

Wi-Fi Network Frequency Band

Dual-band 2.4 GHz / 5 GHz

Amplifier Output Power (Per Speaker)

LF: 280W
HF: 100W

Power Input

100 – 240VAC 50/60Hz

Power Consumption

200W (operating power)
<2.0W (standby power)

Metamaterial Absorption Technology is a joint development with Acoustic Metamaterials Group.

Please visit our Product Support page for more details. KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.

AWARDS & REVIEWS

WHAT HI-FI? AWARDS 2024
BEST SPEAKER SYSTEM £1500-£3000

"An innovative and entertaining sequel." - What Hi-Fi?, Oct 2024

FULL REVIEW

WHAT HI-FI? AWARDS 2022
BEST ALL-IN-ONE SYSTEM OVER £1500

"KEF’s revisions have paid off: these sequels are among the most thrilling speaker systems we’ve heard." - What Hi-Fi?, Oct 2022

WHAT HI-FI? AWARDS 2021 - 'PRODUCT OF THE YEAR'

“These sequels are among the most thrilling speaker systems we’ve heard.” - What Hi-Fi?, October 2021

FULL REVIEW

AVFORUMS - HIGHLY RECOMMENDED AWARD

“As befits a device that is designed to be used as a standalone system, the connectivity on the KEF is extensive.” - AVForums.com - July 2021

FULL REVIEW

AVFORUMS.COM EDITOR'S CHOICE - BEST HIGH-END WIRELESS SPEAKER, 2021

“It’s a brilliant bit of kit and a worthy award winner.” - AVForums.com, Editor's Choice Awards 2021

FULL REVIEW

HIFI CHOICE - RECOMMENDED

“A talented and impressively flexible system that delivers superb performance across its many features.” - Hi-Fi Choice, Iss. 479, Sept. 2021

FULL REVIEW

5 STAR REVIEW - WHAT HI-FI? SOUND AND VISION

“These sequels are among the most thrilling speaker systems we’ve heard.” - September 2020

FULL REVIEW

INSTRUCTIONAL VIDEOS

IOS Set up

Android Set up

Simple Home Cinema Setup with TV

AirPlay 2 Streaming

Google Cast Streaming

Spotify Connect

Tidal Connect

Listen to Internet Radio

EQ Settings (Normal mode)

EQ Settings with Subwoofer

See how it looks in your home

Not sure which colour to choose? Try our Augmented Reality function to check out how incredible LS50 Wireless II will look and see which colour suits best in your home.

VIEW IN 3D

*Actual product colour may vary from the AR version shown.
**This feature is not supported on Chrome for iOS devices.

What's in the box

LS50 Wireless II
Remote control
Interspeaker Cable
Power cord
Quick Start Guide, Warranty

*Contents and colour vary by region

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.

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