Materials
We chose pure 99.99% copper or silver (depending on the models) 4N grade, using a rarely seen technology that suppresses skin effects and time smear commonly found in the majority of commercial audio cables.
We never use silver plated metals for the conductors.
We make exclusive use of annealed (soft) metals to benefit from maximum conductivity. The dielectrics we employ are also chosen for the best possible audio quality, normally PTFE, but we also tested and do use others : we employ specially designed dielectrics that sonically match our needs.
PTFE is one of the best dielectric available for audio use (but only one of the best), however it is not so easy to use in a good sounding cable. Industrial techniques that consist in extruding PTFE onto the active conductors rarely give good results for audio use (copper, aluminum, ... and especially silver) because extrusion occurs at a rather high temperature; oxidation and surface conductivity issues may occur.
