KEF LS Luxe review: Luxury looks meet luxury sound

Justifiably encouraged by its domination of the ‘wireless stereo speaker system’ scene, KEF has decided to see what sort of damage it can do even further upmarket.

The LS Luxe system, on review here, wants to combine outstanding sound with unique aesthetics – and half of that battle is won before it’s even plugged in!

Price & Availability

The KEF LS Luxe wireless stereo speaker system is on sale now, and in the United Kingdom it costs £3499.

It sells for $3999 in the United States, and in Australia the going rate is AU$6399.

Push the boat out yet further by opting for a pair of the bespoke S-Luxe stands and you will add another £799 / $799 / AU$1199 to the bill.

Features & What's New?

Everything about the LS Luxe is striking in one way or another – but perhaps it’s the 12th-gen Uni-Q driver array that’s the most visually dramatic thing about this system.

KEF has been perfecting this driver arrangement since the first Uni-Q made an appearance back in 1988 – and here this coincident-source layout features a 25mm aluminium tweeter in the centre of a 165mm mid/bass driver.

As with every Uni-Q array, the idea is to offer outstanding time-alignment and top-notch driver integration by having the tweeter and the mid/bass driver occupy the same point in space.

Of course, there are some rather newer technologies deployed here in order to get the best from this array. KEF has positioned its ‘metamaterial absorption technology’ behind the tweeter, where it can negate the energy travelling backwards from the tweeter and prevent it corrupting treble response.

‘Velocity Control Technology’, which was first deployed in 2025’s XIO soundbar, assesses the speed of movement of the mid/bass cone and compensates for differences between the actual and the expected values in real time.

The ‘Music Integrity Engine’, meanwhile, is in charge of maintaining tonal consistency at all volume levels.

The Uni-Q array is mechanically decoupled from the body of the cabinet, and a separate chassis within the driver assembly minimises any and all vibrations produced by the motor system – both of these measures are intended to keep vibration in the cabinet structure to a bare minimum. This way, goes the thinking, clarity can be maximised and distortion minimised.

The audio information that’s going to feel the benefit of this very thorough demonstration of engineering can be fed to the system in a few different ways.

Wireless connectivity is handled by the ‘primary’ speaker. It includes Bluetooth 5.3 and, more importantly, dual-band Wi-Fi on KEF’s ‘W2’ wireless platform – which means that Apple AirPlay 2, Google Cast, the ‘Connect’ versions of Qobuz, Spotify and Tidal, and internet radio are all available. In addition, the LS Luxe is UPnP-compatible and will be Roon Ready before very much longer.

The ‘primary’ speaker is also where all the physical connectivity lives. There’s an Ethernet socket, naturally enough, along with digital coaxial and optical inputs, an HDMI eARC socket and a 3.5mm analogue input at line level.

A USB-C slot looks like it might be another digital input, but in fact is a 5V charging slot. There’s also a pre-out for use with a subwoofer and an RJ45 socket for connection to the ‘secondary’ speaker. This ‘secondary’ speaker has a corresponding RJ45, of course, and also features a subwoofer pre-out of its own.

If you use the cable KEF provides to join the speakers together, they operate at 24bit/192kHz resolution. If you prefer a wireless connection, the resolution is cut to a still-healthy 24bit/96kHz. The LS Luxe can deal with resolutions of up to 24bit/384kHz and DSD128 through its network inputs, 24bit/192kHz via digital coaxial and HDMI, and 24bit/96kHz via digital optical.

Once the audio information is on board, decoded and ready to go, it’s amplified by two different types of power. Each mid/bass driver can call on 280 watts of Class D amplification, while each tweeter is driven by 100 watts of Class A/B power – an all-in total of 380 watts per channel really should be sufficient unless you’re trying to fill an aircraft hangar with sound.

Performance

Position the KEF LS Luxe as you would almost any other pair of stereo speakers – toed in so that a line drawn from each driver array would cross just in front of your seated position – and the sonic performance is not all you might be hoping for. In this orientation the sound is narrow and confined.

Get them to the point where they’re almost, but not quite, pointing straight ahead and they‘re much happier – and so, as a consequence, will you be.

The soundstage is still not the widest you ever heard, but it’s nevertheless appreciably taller and more confidently and convincingly laid out. The LS Luxe has a quite narrow ‘sweet spot’ where positioning is concerned, but it’s worth putting in the time to find it – because the rewards are significant.

It’s actually difficult to know where to start when discussing the things the KEF is good at. There’s detail retrieval, of course – this system is alert to even the finest, most minor details in a recording, and is more than capable of teasing them out and putting them into convincing context.

It’s analytical in this respect, sure, but it’s not in any way prissy, or uptight about it, and it never becomes the whole point of the LS Luxe’s performance. It simply reveals absolutely as much detail as possible, because it’s keen to give you as complete a sonic picture as possible.

And then there’s frequency response. At the bottom-end the KEF digs deep, hits with determination, and thanks to those sky-high detail levels it makes a stack of information regarding tonal and textural variation available too.

At the opposite end it attacks treble sounds with gusto – but it’s never hard or edgy, even at the considerable volumes the system is capable of achieving, and there’s plenty of substance to balance out the bite and shine of the top-end response.

In between, it communicates eloquently through the midrange, allowing voices to express the secrets of their technique and timbre just as readily as of their emotional state of overall character.

But the LS Luxe never underplays any area of the frequency range, just as it never seeks to push any area into the spotlight. It’s even, smooth and balanced from top to bottom, and back again.

Dynamic headroom is considerable – so even if you’re listening at quite big volumes to start with, the KEF is able to track upticks in intensity and attack in a completely unstressed manner. It’s equally adept with the more nuanced dynamics of tonal and harmonic variation – because that extraordinary attention to detail is apparent at every turn.

Control and balance are apparent everywhere – but no more so than when it comes to rhythmic expression. The LS Luxe does great work when controlling the decay and, especially, the attack of low-end information – and because every note or hit at the bottom of the frequency range is straight-edged at the point of attack, rhythms are handled with a confident, naturalistic attitude that makes for a fluent account of rhythm-centric recordings.

Overall, the KEF LS Luxe is a decently energetic, impressively insightful and, ultimately, endlessly entertaining listen. Once its speakers are pointing in the correct direction anyway.

Design & Usability

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Between the Uni-Q driver array and the edgeless, seamless, slippery look of the LS Luxe cabinets, it seems fair to say that some designing has gone on here. Which is more than you can say about most of the more functional-looking alternatives to this KEF system.

KEF has again collaborated with Ross Lovegrove for the design of the LS Luxe, and the curvily organic shape of the speakers is easily recognisable as his work. It’s the use of BMC (‘bulk moulding compound’) in their construction that allows for this fairly elaborate shape – and it has advantages to its malleability beyond its willingness to form distinctive shapes.

The cabinet shape here is less susceptible to the build-up of internal standing waves than the more usual ‘box’ shape. The rigidity of the material means that less internal bracing is required than is the norm, which liberates greater internal volume than would be the case in a straight-edged cabinet of similar dimensions.

The rear of the cabinet has a degree of visual drama, too, as you can see from the images scattered throughout this review.

Each speaker features a heat-sink to help disperse the heat generated by the internal electronics – and here it’s chanelled and swoopily curved, which increases its surface area as well as making it look mildly unusual.

Each speaker’s bass reflex port divides its heat-sink - it’s a relatively large port and it features KEF’s ‘Flexible Port Technology’. This is another way of saying the walls of the port are less than rigid, and this configuration intends to keep internal resonance down to a minimum.

Three finishes are available: as well as the Eclipse Black of my review sample, Mineral White and Dusk Titanium are also available.

This isn’t the first pair of speakers I’ve encountered that look better in some finishes than in others, of course – but it might well be the pair that is most affected by the colour they’re finished in.

For my money, at least, Eclipse Black makes the speakers look bulkier and chunkier than either of the other two alternatives. You are, of course, very welcome to disagree – and might want to get to a KEF showroom to check out the whole range with your own eyes.

Verdict

There’s more than a normal amount of legwork to be done when setting up the LS Luxe, but don’t be discouraged – putting in the required effort to position the system correctly allows it to perform in the most engaging and impressive way possible.

Yes, this is one of the more expensive products of its type around (as long as you discount some couture outliers), but it’s also one of the very best.

Also Consider

In its own way the Sonus Faber Duetto is just as distinctive as the LS Luxe – more readily identifiable as speakers, sure, but elegantly shaped and beautifully made, and with almost as much credibility as furniture as it has as an audio system. The sound is more easy-going than the KEF equivalent, but some listeners are sure to count that as a positive.

By way of contrast, the JBL 4329P couldn’t look any more like a purposeful, functional pair of loudspeakers if it tried. But while its potential as decorative items hovers around ‘zero’, it has an awful lot going for it where sheer sound quality is concerned. If you’re all about the listening and unconcerned about the looks, this system deserves serious consideration.