Super Lumina speaker cables are designed to minimise the effect of external and internal interference sources and preserve maximum signal fidelity. The fundamental cable design consists of several individually-insulated multi-strand silver-plated copper conductors of varying diameters enclosed in a tin-plated copper shield. This is all enclosed in a soft outer jacket which facilitates easy installation whilst minimising microphonic interference. Each signal return ground and shield conductor is individually manufactured for its specific function.