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215-997-4300 927 Bethlehem Pk. Colmar, PA
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Crimson Red Special Edition LS50 Wireless II

Kef SP4025KC

Available in 4 Color(s)

color swatch Mineral White
SP4025AC
color swatch Carbon Black
SP4025BC
color swatch Titanium Grey
SP4025HC
color swatch Crimson Red Special Edition
SP4025KC

Quick Specs

  • Type: Speakers
 
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.



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"





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) What's in the box
LS50 Wireless II
Remote control
Interspeaker Cable
Power cord
Quick Start Guide, Warranty
*Contents and colour vary by region
Model LS50 Wireless II
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
Frequency Range (-6dB) Measured at 85dB/1m 40 Hz - 47 kHz *Depends on EQ settings
Frequency Response ( 3dB) Measured at 85dB/1m 45 Hz - 28 kHz *Depends on EQ settings
Amplifier Output Power (Per Speaker) LF: 280W HF: 100W
Amplifier Class (Per Speaker) LF: Class D HF: Class AB
Max SPL Measured at 1m 108 dB
Wireless Streaming Features AirPlay 2
Google Chromecast
ROON Ready
UPnP Compatible
Bluetooth 5.0
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
Interspeaker Connection Wireless: all sources resampled to 96kHz/24bit PCM Wired: all sources resampled to 192kHz/24bit 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
Dimensions (HWD per Speaker) 305 x 200 x 311 mm (12 x 7.9 x 12.2 in.)
Power Input 100 - 240VAC 50/60Hz
Power Consumption 200W (operating power) <2.0W (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 *Depends on services availability in different countries
Primary Speaker Inputs HDMI eARC TOSLINK Optical Digital Coaxial Analog 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)
Output RCA Subwoofer output

Quick Specs


  • Appearance

  • Type: Speakers

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.