There doesn't seem to be a lot of info on these cables here on Head-Fi, but I have the IEM version and have just got the headphone version too. They are excellent value for money in my opinion, they don't use solder at the connectors and the cables are made of high purity OCC copper. Both cables have the same inner cores, but the outer sheathing has been removed below the y-split on the IEM cable to make it lighter. Sound wise, I have only just got the headphone one, but the IEM cable has a very balanced sound that focusses on a natural tone and excellent air and separation. It won't change the core signature of your IEMs, but it is one of my favourite cables due to the incredible sense of natural tone and effortless sound staging that impresses me.