Beautiful both inside and out

Diana is a product created by combining the world-renowned IEM technology of Jerry Harvey Audio, which has long been making custom earphones for musicians worldwide, and the expertise of Astell&Kern reputed for their quality products made in Korea.

Diana features the patented Freqphase from Jerry Harvey Audio and the same new sound bore design applied to Billie Jean. Its impeccably beautiful full metal shell made from aluminum with great precision not only delivers a visually impressive image but also makes the sound more solid so you enjoy the most ideal sound without distortion in all sound ranges.

The 3-way 3-Drivers, optimized size, plus silver tinsel and anaerobic copper cables used in high-end top cables, come together to provide outstanding sound that cannot be matched in existing IEM products.