ZAC Fiber optical digital interconnect Optical Toslink & Mini plug S/PDIF ZAC stands for Zero Attenuation Concept. The innovative furbished curving of the optical fibre core tip to get a zero divergence loss enables plastic fibre optics to be used at all, and to achieve the same transmission quality as of a glass fibre core in combination with the strength and flexibility of the plastic core. Complete galvanic isolation - Allows for interconnections between devices with separate earth potentials and phase, e.g. computer, TV and home cinema. Immune to household electricity - does not add any noise like in many electrical signal transmissions. Supra ZAC fibre optic fitted with Toslink plugs is very often used between numerous digital sources, DAC converters, TV’s and home cinema receivers.