Key Features

Premium active bookshelf speakers with built-in amplifiers (no external amp needed).

Uni-Q 12th-generation driver array with Metamaterial Absorption Technology (MAT) for ultra-low distortion.

Powerful built-in amplification: 280W (woofer) + 100W (tweeter) per speaker.

Frequency response: 45Hz – 28kHz (±3dB) with extended low-end to 40Hz (-6dB).

Maximum SPL: 108 dB at 1 meter.

High-resolution audio support up to 24-bit/384kHz, plus support for DSD, FLAC, WAV, ALAC, and more.

Wireless music streaming via Wi-Fi, AirPlay 2, Chromecast, Bluetooth, UPnP, and Roon Ready.

HDMI eARC for TV connection + Optical, Coaxial, Analog, and Subwoofer output.

App-based control with EQ, room tuning, and streaming integration.

Stylish, compact cabinet design with the special Crimson Red finish.

Ideal for small and medium rooms—clean imaging, large soundstage, and highly detailed sound.

Description

KEF LS50 Wireless 2 – Powered/Active Bookshelf Speaker (Pair) (Crimson Red)

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.

Freedom

All the music, all the time

Play all major music services and support all major audio formats
Wireless both from the source and between the speakers
Comprehensive applications and connectivity

User-Centred

Let you be you

Intuitive onboarding 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 the KEF S2 Floor Stand (available as a separate item)

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.

Specifications

Model	LS50 Wireless II
Source Resolution	Network up to 384kHz/24bit Optical up to 96kHz/24bit Coaxial up to 192kHz/24bit HDMI up to 192kHz/24bit
Streaming Services	Spotify via Spotify Connect Tidal via Tidal Connect Amazon Music Qobuz Deezer QQ Music via QPlay (coming soon) Internet Radio Podcast
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
Interspeaker Connection	Wireless: all sources resampled to 96kHz/24bit PCM Wired: all sources resampled to 192kHz/24-bit PCM
Frequency Range (-6dB) Measured at 85dB/1m	40 Hz – 47 kHz *Depends on EQ settings
Primary Speaker Inputs	HDMI eARC TOSLINK Optical Digital Coaxial Analog 3.5mm Auxiliary USB Type A (service) RJ45 Ethernet (network) RJ45 Ethernet (interspeaker)
Frequency Response (±3dB) Measured at 85dB/1m	45 Hz – 28 kHz *Depends on EQ settings
Home Automation System	Elan, RTi, Crestron Home, Savant, Control4, URC
Amplifier Output Power (Per Speaker)	LF: 280W HF: 100W
Supported Format (All Inputs)	MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis
Output	RCA Subwoofer output
Amplifier Class	LF: Class D HF: Class AB
Supported Format (Network)	MQA DSF: DSD64, DSD128 DFF: DSD64
Wi-Fi Network Frequency Band	Dual-band 2.4 GHz / 5 GHz
Max SPL Measured at 1m	108 dB
Dimensions (HWD per Speaker)	305 x 200 x 311 mm (12 x 7.9 x 12.2 in.)
Secondary Speaker Inputs	USB Type A (service) RJ45 Ethernet (interspeaker)
Wireless Streaming Features	AirPlay 2 Google Chromecast ROON Ready UPnP Compatible Bluetooth 5.0
Power Input	100 – 240VAC 50/60Hz
Output	RCA Subwoofer output
Power Consumption	200W (operating power) <2.0W (standby power)