KEF LS50 Wireless II Active Wireless Speaker System
Brand: KEF
The KEF LS50 Wireless II is a high-performance all-in-one active speaker system combining KEF’s Uni-Q® driver array with MAT™, powerful built-in amplification and extensive wireless streaming. With AirPlay 2, Google Cast, Roon Ready, Bluetooth 5.0, HDMI eARC and multiple digital inputs, it delivers premium high-fidelity sound for music, TV and gaming.
All-in-One High-Fidelity Sound with Wireless Freedom
Uni-Q® with MAT™
Powerful Built-In Amplification
Complete Streaming & Connectivity
LS50 Wireless II
KEF LS50 Wireless II Active Wireless Speaker System
The KEF LS50 Wireless II combines high-fidelity sound, wireless streaming and flexible connectivity in a compact active speaker system. Each speaker uses a 130mm aluminium Uni-Q® low-frequency driver with a 25mm vented aluminium dome tweeter featuring Metamaterial Absorption Technology. Dedicated amplification delivers 280W to the low-frequency section and 100W to the high-frequency section per speaker. AirPlay 2, Google Cast, Roon Ready, Bluetooth 5.0 and UPnP provide extensive streaming options, while HDMI eARC, optical, coaxial, auxiliary and Ethernet connections support TVs, consoles and other audio sources.
LS50 Wireless II
Details & Specifications
Design & Driver Configuration
| Brand | KEF |
|---|---|
| Model | LS50 Wireless II |
| Product Type | Active Wireless Speaker System |
| Driver Technology | Uni-Q® Driver Array with MAT™ |
| Low-Frequency Driver | 130mm (5.25 in.) Aluminium Cone |
| High-Frequency Driver | 25mm (1 in.) Vented Aluminium Dome with MAT™ |
Frequency & Acoustic Performance
| Frequency Response (±3dB) | 45Hz–28kHz |
|---|---|
| Frequency Range (-6dB) | 40Hz–47kHz |
| Measurement Level | 85dB / 1m |
| Maximum SPL at 1m | 108dB |
| Frequency Performance | Depends on EQ Settings |
Amplification
| LF Amplifier Output per Speaker | 280W |
|---|---|
| HF Amplifier Output per Speaker | 100W |
| LF Amplifier Class | Class D |
| HF Amplifier Class | Class AB |
Wireless Streaming & Audio Formats
| AirPlay 2 | Yes |
|---|---|
| Google Cast | Yes |
| Roon Ready | Yes |
| UPnP Compatible | Yes |
| Bluetooth | Bluetooth 5.0 |
| Audirvāna | Supported |
| Streaming Services | Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer, QQ Music via QPlay, Internet Radio, Podcast |
| Supported Input Formats | MP3, M4A, AAC, FLAC, WAV, AIFF, ALAC, WMA, LPCM, Ogg Vorbis |
| Network Formats | MQA, DSF DSD64 / DSD128, DFF DSD64 |
Inputs, Outputs & Resolution
| Network Resolution | Up to 384kHz / 24-bit |
|---|---|
| Optical Resolution | Up to 96kHz / 24-bit |
| Coaxial Resolution | Up to 192kHz / 24-bit |
| HDMI Resolution | Up to 192kHz / 24-bit |
| Primary Speaker Inputs | HDMI eARC, TOSLINK Optical, Digital Coaxial, Analog 3.5mm Auxiliary, USB Type-A, RJ45 Ethernet Network, RJ45 Ethernet Interspeaker |
| Secondary Speaker Inputs | USB Type-A, RJ45 Ethernet Interspeaker |
| Subwoofer Output | RCA Subwoofer Output |
| Wireless Interspeaker Resolution | 96kHz / 24-bit PCM |
| Wired Interspeaker Resolution | 192kHz / 24-bit PCM |
Dimensions, Network & Power
| Dimensions per Speaker (H × W × D) | 305 × 200 × 311 mm |
|---|---|
| Dimensions per Speaker | 12 × 7.9 × 12.2 in |
| Weight per Set | 20.1 kg / 44.3 lb |
| Power Input | 100–240VAC, 50/60Hz |
| Operating Power Consumption | 200W |
| Standby Power Consumption | <2.0W |
| Wi-Fi Standard | IEEE 802.11a/b/g/n/ac |
| Network Protocol | IPv4 / IPv6 |
| Wi-Fi Frequency Bands | 2.4GHz / 5GHz Dual-Band |
| Home Automation Support | Elan, RTi, Crestron Home, Savant, Control4, URC |
About KEF
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