Sennheiser
Sennheiser chose amorphous zirconium over something more typical because of how resistant the metal is to erosion.
Sennheiser said it intends for the IE 600 to be used for decades after purchase while maintaining high-quality sound.
Of course, the earbuds command a pretty high price because the metal is less common.
Sennheiser
The IE 600 will set you back $700 when released later this year.
TheTrueResponse transducer, a tiny 7-mm driver that outputs big sound, sits inside the earbuds.
The driver has a high range of frequency and has been specially developed to have no annoying distortion.
Sennheiser
you might then attach the earbuds to other cables with a diameter of 4.8 mm or less.
