KEF MUON Floorstanding Loudspeakers

£180,000.00 inc. VAT

Trade-in available.

A triumph of form marrying function, MUON by KEF Audio is perhaps the most extraordinary loudspeaker ever conceived.

MUON is the result of KEF engineering prowess, combining with world-class industrial design by Ross Lovegrove.

Available in Aluminium finish only.



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The MUON project is ambitious to say the least. Visionary designer Ross Lovegrove was tasked with turning the finest acoustic engineering into the ultimate loudspeaker, by combining form and function with manufacturing integrity.

The MUON loudspeaker is fabricated from super-formed aluminium to create a shape devoid of sharp edges and extremely stiff. It combines Ross Lovegrove’s design aesthetics with KEF’s finest engineering.

The process by which MUON was conceived meant that, in effect, Ross Lovegrove was sculpting the sound by skinning the technology with purposeful form – the final shape was created through an evolutionary process that makes it perfectly suited to its purpose.

MUON is a truly remarkable feat of sound-engineering and cutting-edge design. Rarely does one find such a sublime marriage of form, function and manufacturing integrity in any field.

Individually crafted and carefully measured in KEF’s highly accurate anechoic chambers, each loudspeaker comes with a certificate showing its unique frequency response curve, signed by the skilled craftsman who made it in KEF’s Maidstone workshop.

One of the reasons why MUON has such outstanding sound quality is its unusually wide bandwidth. It reproduces sounds that are so low and so high that the human ear does not register them in the normal way. We can feel very low bass and tests have show that we sense very high frequencies, so this extra information increases the realism of the overall sound.

The way that Ross Lovegrove has wrapped form around sound in MUON reveals that great design and superlative sound can coexist in one product.

Not only is MUON iconic in its styling, its design and manufacture would not have been possible without highly sophisticated CAD/CAM software and technology.

Guided by engineering and aesthetics, MUON is as much an extraordinary piece of sculpture as it is the ultimate sound provider. It’s an exquisite example of British engineering and design at its very best.


MUON’s powerful bass drivers are one element that makes it so superior. But it is also the upper mid-range and treble where some of the key technology lies, the Uni-Q® drive unit array which delivers seamless imaging throughout the room.

KEF also used Acoustic Compliance Enhancement (ACE) technology, this effectively doubles the available volume through adsorption of air molecules by activated carbon.

MUON has established a major benchmark in acoustic transparency. It has achieved this through several key innovations in form, function and materials.

Musical Form

Ross Lovegrove’s design for the MUON is more than just a beautiful form in polished aluminium. It provides the drivers with the perfect environment to deliver seamless, open sound. The curvaceous torso like form breaks up the visual mass of the cabinet whilst providing a smooth, unbroken surface. This allows sound to radiate out and create a field of pure engagement. The result is music with unprecedented three-dimensional presence.

MUON’s 6 mm aluminium shell provides a totally rigid structure that minimizes sound-distorting vibrations. Inside are strengthening braces and a coating of damping compound that makes the whole unit completely inert, even when the speaker is playing loud.

Uni-Q Driver Array

KEF’s patented Uni-Q driver places the tweeter in the acoustic centre of the midrange cone.

This allows both midrange and tweeter to act as a single, focused source of sound that is dispersed widely and evenly throughout the room.

In MUON the smooth curved shape of Ross Lovegrove’s beautiful cabinet design significantly enhances the benefits of Uni-Q by removing sharp edges that cause diffraction and blur the image.

The result is truly extraordinary sound quality that can be experienced from anywhere in the listening environment with no obvious “sweet spot” effect


  • Ultimate form / function statement loudspeaker.
  • Fabricated from super-formed aluminium.
  • Amazingly wide bandwidth, with outstanding sonic quality.
  • Acoustic Compliance Enhancement (ACE) technology.
  • Uni-Q™ Driver Array


  • Design: Four-way closed box floor-standing loudspeaker ACE enclosure
  • Dimensions (H x W x D): 2000 x 600 x 380 mm
  • Weight: 115 kg
  • Drive Units:
    • 6 x 250 mm (10 in.) LF
    • 1 x 250mm (10 in.) LMF
  • Uni-Q Driver Array:
    • 1 x 125mm (5 in.) Li-Mg-Al /LCP, hybrid cone MF
    • 1 x 25mm (1 in.) vented aluminium dome HF, featuring KEF’s unique Tangerine Waveguide
  • Frequency Response: 25 Hz – 60 kHz (±3 dB)
  • Crossover Frequencies: 120 Hz, 300 Hz, 2.3 kHz
  • Amplifier Requirements: 100 – 400 W (typical)
  • Sensitivity: 90 dB (2.83 V / 1 m)
  • Input Impedance: 4 Ohms
  • Low Frequency Extension: 20 Hz (-6 dB)
  • High Frequency Extension: 100 kHz (-10 dB)
  • Maximum Output: 118 dB

Full KEF Range Available

Unilet Sound & Vision are official reference retail partners for KEF Audio, providing sales, advice and assistance on their entire range of high-quality products, including MUON, Reference, R Series, Q Series, LS Series, and Ci ranges. Please do get in touch if you would like a demonstration or wish to purchase.

More Information

Additional information

Weight 115.00 kg
Dimensions 38.0 × 60.0 × 200.00 cm


Purchase Options

Home Delivery, Click & Collect, Trade-In Available



Founded in 1961 by ex-BBC electrical engineer Raymond Cooke OBE, KEF was initially headquartered in a Nissen Hut on the premises of Kent Engineering & Foundry (from where the name KEF is derived), a metal-working company on the banks of the River Medway, near Maidstone in Kent.

From the very beginning, the pioneering inventiveness of KEF loudspeakers was undeniable and now for several decades, audiophiles around the world have revered KEF for their innovative, high-performance, beautiful loudspeakers.

KEF | Unilet Sound & Vision


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