Description
The LS50 Wireless II is an active, all-in-one bookshelf speaker system streaming from any source via AirPlay 2, Chromecast, and more, with wired connections for TV, turntable, and games console. It's built around KEF's 12th generation Uni-Q driver array with Metamaterial Absorption Technology (MAT), delivering audiophile-grade sound with support for streaming up to 24bit/384kHz, MQA, and DSD256.
Features
- Wireless from source and between speakers, or wired for higher-resolution interspeaker connection
- Out-of-the-box compatibility with AirPlay 2, Google Chromecast, and Roon Ready (coming soon)
- Personalized listening experience and sound tuning via the KEF Connect app
- Simple multiroom system when used with AirPlay 2, Chromecast, or Roon
- Metamaterial Absorption Technology (MAT) absorbs 99% of unwanted rear-driver sound
- 12th generation Uni-Q driver array with MAT for reduced coloration and even dispersion
- Music Integrity Engine DSP optimized for the Uni-Q driver, for tighter imaging
- Built-in KEF-developed amplification: 100W Class A/B tweeter amp, 280W Class D mid/bass amp per speaker
Specifications
- Drive units: Uni-Q array — 130mm (5.25in) aluminium LF cone, 25mm (1in) vented aluminium HF dome with MAT
- Frequency range (-6dB @ 85dB/1m): 40Hz–47kHz
- Frequency response (±3dB @ 85dB/1m): 45Hz–28kHz
- Amplifier output power (per speaker): 280W LF, 100W HF
- Amplifier class (per speaker): Class D (LF), Class AB (HF)
- Max SPL (measured at 1m): 108dB
- Wireless streaming: AirPlay 2, Google Chromecast, Roon Ready (coming soon), UPnP, Bluetooth 4.2
- Streaming services: Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer, QQ Music via QPlay (coming soon), internet radio, podcasts
- Source resolution: Network up to 384kHz/24bit, Optical up to 96kHz/24bit, Coaxial up to 192kHz/24bit, HDMI up to 192kHz/24bit
- Interspeaker connection: wireless resampled to 96kHz/24bit PCM; wired resampled to 192kHz/24bit PCM
- Supported formats (all inputs): MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM, Ogg Vorbis
- Supported formats (network): MQA, DSF (DSD64/128/256), DFF (DSD64)
- Dimensions (H x W x D, per speaker): 305 x 200 x 311mm (12 x 7.9 x 12.2in)
- Weight (per set): 20.1kg (44.31lb)
- Power input: 100–240VAC 50/60Hz
- Power consumption: 200W operating, <2.0W standby
- Primary speaker inputs: HDMI eARC, TOSLINK optical, digital coaxial, 3.5mm analog aux, USB Type A (service), RJ45 Ethernet (network and interspeaker)
- Secondary speaker inputs: USB Type A (service), RJ45 Ethernet (interspeaker)
- Output: RCA subwoofer output
- Wi-Fi: IEEE 802.11a/b/g/n/ac, IPv4/IPv6, dual-band 2.4GHz/5GHz
- Box contents: LS50 Wireless II pair, remote control, interspeaker cable, power cord, quick start guide, warranty