I was rather hopeful given the other reviews, plus own the Xiaomi Mi Basic version so has assumed this would be a nice step up. A reasonable attempt at being neutral, i.e. no overpowering bass like most IEM's seem to have. The bass that is there is muddy and tapers off so there's no sub-bass. Perhaps it's the nature of balanced armatures, but I hate the treble from these. It's not bright but it sounds glass-like and does not blend well with the dynamic driver handling the bass/mids. I suspect there's a response dip from the upper-mids to the treble region. Anyway, the two drivers seem utterly mismatched. I don't think I've ever returned...view more