Win a set of Astell &Kern Billie Jean IEMs! Billie Jean is the latest collaboration of In-Ear-Monitors (IEMs) between Astell&Kern and Jerry Harvey Audio which feature a new Dual Balanced Armature (BA) driver system. It is another winning product created by combining the experience and know-how of Jerry Harvey's IEM design and the quality production of Astell&Kern.Competition ends 31/05/19. UK entries only. Good luck!