KEF LS50 Wireless II: The Whole System, Vanished Into Two Boxes
Built on the acclaimed LS50 Meta acoustic platform, the LS50 Wireless II is a fully active stereo speaker system with everything - amplification, DSP, and streaming - engineered in-house by KEF and built into the cabinets themselves.
12th generation Uni-Q with MAT: KEF's coincident driver array paired with Metamaterial Absorption Technology, absorbing 99% of unwanted rear-driver sound for exceptional acoustic accuracy and a genuinely coloration-free midrange
Power, fully in-house: dedicated 280W Class D amplifiers driving the bass/midrange, and 100W Class A/B amplifiers driving the tweeters, both engineered and tuned by KEF rather than sourced off-the-shelf
Music Integrity Engine: bespoke DSP optimized specifically for the Uni-Q array, delivering precisely timed output for sharper imaging and a tighter, unsmeared sound
Every source covered: AirPlay 2, Chromecast, Roon Ready, Spotify/TIDAL/Qobuz/Amazon Music Connect, plus wired HDMI eARC, optical, coaxial, and a dedicated phono-ready analog input for your turntable
High-resolution throughout: supports up to 24-bit/384kHz playback, DSD256, and MQA decoding, with speaker-to-speaker connectivity up to 24-bit/192kHz over the included wired link
"KEF’s revisions have paid off: these sequels are among the most thrilling speaker systems we’ve heard" - What Hi*Fi
Listening Notes
Small stand-mounts that disappear entirely. Timing is razor-sharp, and the soundstage has a depth that has nothing to do with their size.
Specs & Features
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 (coming soon)
UPnP Compatible
Bluetooth 4.2
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
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
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