Metamaterial Absorption Technology

Metamaterial Absorption Technology

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 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.

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