configuration. Solid conductors prevent strand interaction, which is the greatest single source of distortion in
an audio cable or in an AC power cable. The nearly perfect surface finish and interior grain structure of PSC
copper dramatically reduce distortion compared to OFHC or other metals. The Quad-Helix spiral creates a
fixed low-inductance relationship between conductors. NRG-1.5's two RF Stoppers filter Radio Frequency Interference in both directions. They reduce outside interference entering the equipment, and they prevent equipment generated interference (as from all digital equipment and tuners) from reaching other equipment in the system.