Do not notice a real difference. Maybe slightly better than a stock cable (clearer, more air and depth)? Maybe it’s just placebo. At least it doesn’t have any negatives.
A good cable. Well built, soft and handles nicely. No degradation to the sound quality. The reason for the docked star is that I personally like a chin slider and this cable lacks one. If it had one it's be pretty much perfect as I like everything else about it.