KEF LS-50 Wireless Active Bookshelf Speakers | Pre-Owned (Pair)

The KEF LS50 Wireless is a complete high-fidelity speaker system that redefines what compact active speakers can do. Inspired by the legendary passive LS50, this wireless version combines KEF’s iconic Uni-Q driver technology with custom-designed amplifiers and advanced digital signal processing for an exceptional, balanced soundstage that fills any room.

Each speaker houses two dedicated amplifiers — a 30W Class A/B amplifier for the tweeter and a 200W Class D amplifier for the mid/bass driver — ensuring detailed highs, rich mids, and deep, controlled bass. The Uni-Q driver array, with its 25mm aluminum dome tweeter at the acoustic center of a 130mm magnesium/aluminum mid-bass cone, creates a wide, three-dimensional sound field that remains consistent across the room.

With built-in Wi-Fi, Bluetooth 4.0, USB, optical, and RCA inputs, the LS50 Wireless easily connects to your preferred music sources — from high-resolution streaming services to traditional components. Controlled via the KEF Control and Stream apps, the system offers intuitive access to music libraries, tone controls, and advanced configuration options.

Elegantly designed and available in premium finishes, the LS50 Wireless is a sonic masterpiece and a design icon in one.

Specifications

System Type: Active bookshelf speaker system

Drivers:

1 × 130mm (5.25") magnesium/aluminum alloy Uni-Q mid-bass driver

1 × 25mm (1") aluminum dome tweeter

Amplifier Power:

HF: 30W Class A/B per channel

LF: 200W Class D per channel

Frequency Response: 45Hz – 28kHz (±3dB)

Maximum Output: 106dB

Inputs:

2.4GHz/5GHz Dual-band Wi-Fi

Bluetooth 4.0 with aptX codec

USB Type B

Optical (TOSLINK)

RCA analog input

Supported Streaming: Spotify Connect, Tidal, DLNA, Roon Tested

Resolution Support: Up to 24-bit/192kHz (USB)

Crossover Frequency: 2.1kHz

Dimensions (H × W × D): 300 × 200 × 308 mm

Weight: 10 kg (each)

Finishes: Titanium Grey/Red, Gloss Black/Blue, Gloss White/Copper

Key Features

True active stereo system with high-resolution playback

Dual amplifiers for each driver for pure, powerful sound

Wi-Fi, Bluetooth, USB, and optical connectivity

Advanced DSP for acoustic precision and control

Controlled via KEF apps for wireless setup and streaming

Iconic LS50 design with a modern, minimalist aesthetic