Astell & Kern Billie Jean Jerry Harvey Audio Siren Series In-Ear Monitor Headphones (Purple)

Developed through collaboration with Jerry Harvey Audio, the purple Astell&Kern Billie Jean are universal in-ear monitor headphones that are the first in the Siren Series to feature dual drivers in a universal-fit IEM from Astell&Kern and Jerry Harvey Audio. The Billie Jean ensures a well-balanced and wide sound stage, remarkable dynamic range, and Jerry Harvey's patented Freqphase technology.