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KEF LS50 Wireless II Powered stereo speakers with Wi-Fi (Pair )
About the KEF LS50 Wireless II
Innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion in KEF LS50 Wireless II speakers.
A customer favorite gets an upgrade
KEF's original LS50 Wireless speaker system made waves in the audio world and was a huge hit with our customers, offering impressive sonic fidelity in a convenient, self-powered package. The new LS50 Wireless II retains the sleek looks while making some important tweaks for even better performance. For starters, KEF has increased the built-in power, with 280 watts for each woofer and 100 watts for each tweeter.
Revolutionary sound absorption
This speaker benefits from KEF's new and innovative Metamaterial Absorption Technology (MAT). It's a highly complex, mazelike structure that's tuned to absorb unwanted sound coming from the rear of the tweeter. The resulting sound is clear, purer, and more detailed.
Wireless music streaming options
These speakers are equipped with built-in dual-band Wi-Fi® and Bluetooth® 5.0 for easy music streaming. The free KEF Connect app offers access to popular music streaming apps, including Spotify® (via Spotify Connect), Tidal, Amazon Music, Qobuz, and Deezer. And internet radio and podcast listening are on tap as well.
Wired connections
The primary speaker in this pair is equipped with the following high-resolution digital inputs for connecting external components:
RJ-45 Ethernet port for network connection (accepts signals up to 24-bit/384kHz)
HDMI eARC (24-bit/192kHz) for improving sound from a compatible TV
Toslink optical digital input (24-bit/96kHz)
coaxial digital input (24-bit/192kHz)
There's also an analog 3.5mm auxiliary input and a mono RCA subwoofer output. The speakers can be interconnected via Ethernet cable or wirelessly. (A wired connection allows higher-resolution 24-bit/192kHz playback.)
The LS50 Wireless II features a patented offset, flexible port for reduced midrange coloration.
A room-filling "sweet spot," thanks to Uni-Q technology
KEF's patented Uni-Q technology places each speaker's tweeter in the acoustic center of the bass/midrange cone. That lets the LS50 Wireless II create a detailed, accurate, three-dimensional sound image. In essence, it makes the "sweet spot" — the ideal listening position — much larger. Sit wherever you like! It'll sound fantastic.
Careful cabinet design
The LS50 Wireless II's extremely rigid cabinet uses smooth, curved surfaces that help the sound radiate outward without distortion. It also features a patented offset, flexible port for reduced midrange coloration. As with previous LS50 models, the cabinet uses a grille-less design to show off the cool-looking driver array and super-stylish color options.
Product highlights:
Featured in our articles: Best high-end wireless speakers for 2025 and Best powered speakers for 2025
bi-amped design with separate woofer and tweeter amplifiers for greater headroom and lower distortion
Uni-Q Driver Array technology makes your entire room sound like the "sweet spot"
innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion
5-1/4" aluminum cone woofer
amplifier power: 280 watts (Class D)
1" vented aluminum dome tweeter
amplifier power: 100 watts (Class AB)
connection between left and right speakers: wired (allows 24-bit/192kHz audio) or wireless (allows 24-bit/96kHz audio)
frequency response: 45-28,000 Hz (±3 dB)
peak SPL: 108 dB
MDF enclosure with elegant curved front baffle
bass-reflex cabinet with patented offset, flexible port for reduced midrange coloration
Wireless features:
Bluetooth 5.0 with aptX® for high-quality audio streaming performance
built-in dual-band Wi-Fi® for audio streaming from your network
compatible streaming platforms include Apple AirPlay® 2 and Google Cast
works as a Roon player (requires subscription and Roon Core running on your network)
Roon Core is media server software that runs on your computer, NAS drive, or other compatible hardware
UPnP for playing music files from your local network
KEF Connect app offers comprehensive remote control via your Apple® or Android™ device
compatible with popular music streaming apps, including Spotify (via Spotify Connect), Tidal, Amazon Music, Qobuz, and Deezer
precise digital signal processing controls allow optimal room integration
Connections (located on primary speaker):
- HDMI eARC (accepts signals up to 24-bit/192kHz) for improved sound from a compatible TV
- Toslink optical digital input (24-bit/96kHz)
- coaxial digital input (24-bit/192kHz)
- RJ45 Ethernet port for network connection (24-bit/384kHz)
- analog 3.5mm auxiliary input
- USB Type A input (for service only)
- mono RCA subwoofer output
- supported file formats (all inputs): MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM and Ogg Vorbis
- also supports DSD files up to 12.3 MHz and MQA files via network connection
Dimensions and warranty:
- 7-15/16"W x 12"H x 12-1/4"D
- weight: 44.31 lbs. (both speakers)
- warranty: 2 years (3 years with registration)
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