Name: KEF LSX II Wireless Hifi Bookshelf Speakers - Open Box
Brand: KEF
Price: 2070.0 AUD
Availability: InStock

KEF LSX II Wireless Hifi Bookshelf Speakers - Open Box

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Colour

Cobalt Blue (Ex-Display)

Todds approved

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Quantity

Works well with

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A compact pair of powered wireless speakers with KEF's 11th generation Uni-Q driver array. KEF lists HDMI ARC and USB-C inputs, AirPlay 2, Google Cast, Roon Ready and Bluetooth 5.0.

Cobalt Blue (Ex-Display)

KEF describes the LSX II as a High-Fidelity wireless system with its Uni-Q driver array and Music Integrity Engine. The two speakers are designed to create a three-dimensional stereo soundstage. The design is by Michael Young.

Drivers

11th gen Uni-Q: 19 mm aluminium dome tweeter, 115 mm woofer

Amplification

Class D, 70 W LF and 30 W HF per speaker

Streaming

AirPlay 2, Google Cast, Roon Ready, Bluetooth 5.0

TV and PC

HDMI ARC, USB-C

Sub output

RCA subwoofer output

Size (H x W x D)

240 x 155 x 180 mm each

KEF on the LSX II

Why you will love it

Uni-Q driver array and Music Integrity Engine

Each speaker uses an 11th generation Uni-Q driver array with a 19 mm aluminium dome tweeter and a 115 mm magnesium/aluminium alloy cone. KEF says the array acts as a point source.

KEF also lists its Music Integrity Engine, a set of digital signal processing algorithms, and separate Class D amplifiers for the low and high frequencies in each speaker.

Connect your TV, computer and turntable

KEF lists HDMI ARC, TOSLINK optical, USB-C, a 3.5 mm analogue auxiliary input and RJ45 Ethernet. KEF says the HDMI ARC and USB-C inputs make the LSX II a companion for TV, laptop and more. There is also an RCA subwoofer output.

Wireless inputs include AirPlay 2, Google Cast, Roon Ready, UPnP and Bluetooth 5.0. KEF lists Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer, internet radio and podcasts.

Set up and control with the KEF Connect app

KEF says the KEF Connect app walks you through setup, controls playback and allows over-the-air firmware updates. Its EQ settings let you tune the speakers to your room or personal taste.

The two speakers link wirelessly (all sources resampled to 48kHz/24bit) or by cable (resampled to 96kHz/24bit).

Rear of the primary KEF LSX II speaker showing the connection panel

Place them where you want

KEF lists S1 floor stands, P1 desk pads and B1 wall brackets as dedicated accessories, so the speakers can sit on a shelf or desk, on a stand or on a wall.

The rear of the primary speaker carries the connections.

Is it right for you?

A great fit if you…

Want a compact stereo system that connects to a TV and a computer
Stream with AirPlay 2, Google Cast, Spotify Connect, Tidal Connect or Roon
Want to add a subwoofer later through the RCA subwoofer output

Worth knowing

The Todds listing shows Cobalt Blue (Ex-Display); please read the note at the top of this page
KEF does not list a phono input
KEF lists the frequency range as depending on EQ settings
KEF's regional pages differ slightly, and this page uses the KEF Australia values where available

Build your system

The LSX II is a complete powered pair. Accessories and a subwoofer are optional.

Desk: Raise them on KEF P1 desk pads for LSX II.
Bass: Add a subwoofer to the RCA subwoofer output, such as the KEF KC62.
Alternatives: Browse the KEF range or bookshelf speakers.

Specifications

Drivers and amplification

Drive units (per speaker)	Uni-Q array: 19 mm (0.75 in.) aluminium dome HF, 115 mm (4.5 in.) magnesium/aluminium alloy cone LF/MF
Amplifier (per speaker)	LF: Class D, 70 W. HF: Class D, 30 W
Frequency range (measured at 85dB/1m)	54Hz to 28kHz (±3dB); 49Hz to 47kHz (-6dB). Depends on EQ settings.
Maximum SPL (1m)	102 dB

Connections

Inputs, primary	HDMI ARC, TOSLINK optical, USB Type-C, 3.5 mm analogue auxiliary, RJ45 Ethernet (network), RJ45 Ethernet (interspeaker)
Inputs, secondary	RJ45 Ethernet (interspeaker)
Outputs	RCA subwoofer output
Interspeaker connection	Wireless: all sources resampled to 48kHz/24bit PCM. Wired: all sources resampled to 96kHz/24bit PCM

Wireless and formats

Streaming features	AirPlay 2, Google Cast, Roon Ready, UPnP compatible, Bluetooth 5.0, Plays with Audirvana
Wi-Fi	IEEE 802.11a/b/g/n/ac, dual-band 2.4 GHz / 5 GHz
Supported resolution	Network up to 384kHz/24bit; optical up to 96kHz/24bit; USB Type-C up to 192kHz/24bit; HDMI up to 1.411Mbps PCM
Supported formats	MQA, DSD, FLAC, WAV, AIFF, ALAC, AAC, WMA, MP3, M4A, LPCM and Ogg Vorbis
Streaming services	Spotify (Spotify Connect), Tidal (Tidal Connect), Amazon Music, Qobuz, Deezer, QQ Music (QPlay), internet radio, podcasts. Availability depends on country.

Physical and electrical

Dimensions (H x W x D)	240 x 155 x 180 mm
Weight	7.2 kg (per set)
Power input	100-240 VAC, 50/60 Hz
Power consumption	200 W (operating power)

Specifications from KEF Australia's LSX II page, checked November 2026. Amplifier output and the frequency range figures are from KEF's international page.

Questions people ask

Is this unit new?

The listing shows Cobalt Blue (Ex-Display). Please read the note at the top of this page.

Does it connect to a TV?

Yes. KEF lists HDMI ARC and TOSLINK optical inputs.

Does it support AirPlay 2 and Google Cast?

Yes. KEF lists AirPlay 2, Google Cast, Roon Ready and Bluetooth 5.0.

Can I add a subwoofer?

Yes. KEF lists an RCA subwoofer output.

Does it have a phono input?

KEF does not list one. A turntable would need an external phono stage.

How do the two speakers connect?

Wirelessly or with a cable. KEF lists 48kHz/24bit wireless and 96kHz/24bit wired.