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About This Product

The LS50 Meta speakers are the first speakers engineered with Metamaterial, breaking new ground in speaker design. Jointly developed with Acoustic Metamaterials Group, the Metamaterial Absorption Technology (MAT) uses specially developed structures that create new properties from existing materials that are not found in naturally occurring substances. MAT features a highly complex maze structure, allowing each of the channels to absorb a specific frequency. With all the channels together, MAT creates an acoustic black hole, absorbing 99% of unwanted resonant frequencies, providing a purer, natural performance without distortion.

The LS50 Meta speakers use a Uni-Q tweeter, positioned in the centre of the main driver for optimum timing. The 12th generation Uni-Q driver delivers point source detailed and accurate sound, dispersed evenly throughout the room. Enjoy your music from any seat and always be in the sweet spot. The midrange driver features a new precisely shaped decoupler and motor system designed to reduce high-frequency distortion. This results in a sound that is more transparent and life-like than the previous LS50. The bass performance exceeds expectations from the compact speaker with deep, articulate bass.

The rear port design also contributes to the clarity of the performance, with Computational Fluid Dynamics offsetting the port to prevent midrange colouration. The design enhances the detail and depth on offer from the LS50 Meta. The curved front helps radiate sound across the baffle without interference for a smooth sound reproduction. The LS50 Meta cabinet is extremely rigid for the best performance, with cross bracing to prevent vibrations.

The LS50 Meta retain the same design of the LS50 speakers, with the low-diffraction baffle and centrally aligned Uni-Q driver. On the underneath of each speaker, a thread insert is fitted, allowing you to secure the LS50 Meta to the new KEF S2 stands, for the best performance from the speakers. The LS50 Meta speakers are available in four different finishes, all silk matte, with black, white, grey and royal blue options.

Product Specifications


Two-way bass reflex

Drive units

Uni-Q Driver Array:HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology

MF/LF: 130 mm (5.25 in.) aluminium cone

Crossover frequency

2.1 kHz

Frequency range (-6dB)

47 Hz - 45 kHz

Maximum output

106 dB

Amplifier power (recommended)


Sensitivity (2.83V/1m)

85 dB

Dimension (H x W x D)

302 x 200 x 280.5 mm



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  • I would just like to thank the Bartlett's team for pulling out all the stops when an order failed to materialise through no fault of their own. Terrific service and would certainly shop with Bartlett's again.

    J.L.L - London
  • Firstly delivery was estimated at 7-11 days - it was actually delivered by courier the next day (Free). Item was an excellent price and although it was advertised as used - it was absolutely mint. This is what internet buying should be like - well done all at Bartletts!

  • If I could give Bartlett's 10 stars I would....Quite superb service (a special mention for Simon here) - Buy from this supplier with complete confidence.