Uniquely, the machined stainless steel outer casing of each spike shoe allows a spike loading of up to 100Kg. It is filled by a combination of specially chosen materials. This proprietary mixture of ingredients are at opposite ends of the elasticity spectrum. The differing resonant frequencies of these materials ensure that resonance is damped equally across the audio band, rather than simply delivering a tonal shift.

The combination of improved coupling and effective resonance control delivers clearly audible benefits, opening up the sound and improving definition from bass through to treble and an opening of the sound stage with greater micro dynamic information.