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KEF Technology

Metamaterial Absorption Technology

KEF Technology

Metamaterial Absorption Technology


“KEF has taken an excellent speaker and made it even better with its innovative Metamaterial tech. The LS50 Metas are now the class leader at this level.” - September 2020, What Hi-Fi?

Revolutionary sound absorption

A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption Technology (MAT™) is a highly complex maze-like structure that eliminates unwanted sound from the rear of driver, resulting in a purer, more natural performance.

Created to eliminate 99%

Metamaterials are specially developed structures that use existing materials in such a way that they exhibit new properties. MAT’s tuned channels absorb 99% of the unwanted sound from the rear of driver, compared to around 60% absorption from loudspeakers using different approaches.
99% of the unwanted sound from the rear of the driver.
MAT’s tuned channels
60% absorption
Loudspeakers using different approaches.

Coming to a speaker
Near You

A new technology as exciting as Metamaterial Absorption Technology requires a great platform from which to perform. So, rest assured, new KEF speakers that benefit from Metamaterial Absorption Technology will be here soon. And the performance benefits will blow you away.


KEF always pushes the technological boundaries in its mission to create the best possible sound; MAT is the physical manifestation of that drive. The result of a joint development project with the Acoustic Metamaterials Group, MAT breaks completely new ground in loudspeaker design.


The world's First Single Apparent Source loudspeaker. Originally designed as a concept speaker, Blade is the world's first single apparent source loudspeaker that extended the boundaries of what high end audio can achieve. It is what makes the Blade incredibly coherent across the frequency range, with noticeably more precise imaging that is possible from any conventional speaker.

The LS50 Collection

Really great loudspeakers simply melt away, leaving you with just the music. A pristine voice, perfectly rendered layers of instruments you can lose yourself in, sound so clear it’s as though the artist is there with you. This is what great loudspeakers with the best technology deliver.

Single Apparent Source Technology

Single Apparent Source technology

Single Apparent Source technology aims to achieve the acoustic ideal of a point source, where low, mid and high frequencies radiate from one point. Perfectly calibrated drivers that cover the entire bandwidth of the loudspeaker are configured so that all frequencies appear to radiate from one single point. The result is noticeably more precise imaging and highly accurate sound across a wider area.


KEF's innovative, patent-pending Uni-CoreTM technology redefines the physical space high-performance speakers and subwoofers required to deliver deep and accurate bass. Through exceptional engineering and creativity, KEF's engineers have revolutionized the traditional force cancelling arrangement with a Uni-CoreTM design that delivers deeper bass from ultra-compact cabinets.