In-akustic’s ‘Micro Air’ technology aims to minimise the physical filter effect of cables by deploying air as a dielectric to insulate concentric copper conductors, which are helically arranged according to a proprietary design. A thin layer of polyethylene protects the pure copper from oxidation.

Accordingly, the new Reference LS-404 Micro Air speaker cable uses air as the insulation surrounding a total of eight concentric copper conductors in a multicore architecture, arranged so that the magnetic fields of the positive and negative conductors overlap and neutralise each other. This specification reduces the inductance of the cable considerably, thereby promoting a faithful transmission of the audio signal over a broad frequency range and with precise timing. Consequently, the LS-404 Micro Air is particularly effective when connecting larger floor-standing loudspeakers.

The Reference LS-404 Micro Air is available with BFA bananas or with spades. The surfaces of the BFA bananas and the spades are finished with a rhodium coating and are therefore extremely durable. Contact surfaces are manufactured from a single piece to minimise contact resistance.


  • Micro Air technology
  • Air dielectric
  • Concentric copper wire construction
  • 8-fold multicore architecture
  • Single wire
  • Made in Germany
  • Available lengths: 2 × 2.0 m, other lengths to special order
  • Available with BFA or spade connectors and Single Bi-Wire (SBW) variants