0 The B150 By Brainwavz Headfonics February 24, 2017 IEM & Earphones, $101-200, Balanced Armature Due to public demand, Brainwavz has decided to introduce a new BA-based series of IEMs. In total there are three new BA-based IEMs; the B100, B150, and B200. Having recently heard the B100 I have had high hopes...