“A friend recently asked me, because of the silver in the VTX-Ag conductor, whether its signature was on the analytical side of the equation or the “warmer and richer” side that some legacy Shunyata power cords, e.g. the “CX Series,” were known for. It occurred to me that I had never considered this question because the Sigma NR is so neutral. And by this I do not mean what “neutral” has come to mean to some audiophiles, which is slightly on the lean, spare, or cool side, rather than the warmer, more romantic side. I mean truly neutral: The Sigma NR v2 imposes virtually no coloration or shading of its own on the music.”-Stephen Scharf.