A few things to take note – Firstly, the official English name for Battleflag is ‘Popo’ (*no idea what that’s supposed to mean). The name ‘Battleflag’ is the direct translation of its Chinese name. Secondly, though I am reviewing Crystal, it is not the same Crystal currently on the market. There have been several batches of Crystal being released in the past, and mine belongs to the previous batch. As far as I know, the same IEM is now being referred as Golden Crystal. So even though I am reviewing Crystal, you can equal it to the Golden Crystal as the current Crystal is a different sounding IEM of its own. Confusing? Yes, but we will leave that discussion to the build quality section.
The price on this models are: Battleflag – US$59; (Golden) Crystal – USD$199; PAA-1 Pro – US$49; Living - US$149.





