I have been using the original powercords and they are very good. I fact better than a lot of other brands including the very expensive and esoteric ones. A couple of week ago i changed 2 of these for the new Signature and yes, these are even better. A lot better i must say in all respects: more detail, better soundstage, better bass,more color, etc. They are more expensive also, but the price-quality ratio is very good. I can recommend to anyone!