I have replaced my old RCA interconnects with this cable, terminated with ETI Brio (Rhodium plated) connectors. I have used the blue pair as signal conductor, and the solid copper red wire for the grounding connection. I have used a tiny silver cable soldered to the shielding of the cable to SEPARATELY ground the shielding. (I have a grounding terminal on my Puritan power conditioner so it was easy to drain the sheild there.)
It is very very good quality as you might expect. It is also easy to work with, it was relatively painless to build my own RCA cable.
As for the sound, one word comes to mind: TRANSPARENCY. It lowered the noise floor and have brought more separation to the "layers" of sounds, more detail too. At first it sounds like it has a bit less bass but in reality it tightened the bass and have provided more realism. As you can tell I am super happy with this cable and I will buying more to building XLR cables in the future.
I highly, highly recommend the NEI-3001G if you need a transparent, high-end sound.