German manufacturer Sennheiser has introduced its new IE 600 in-ear earphones, equipped with a zirconium shell, a particularly resistant material that should ensure sound output quality without the slightest alteration, even after several years of use. The ultra-resistant shell of these earphones, made of amorphous zirconium, is manufactured through 3D printing. It guarantees a perfectly natural sound for many years, without any wear. Indeed, zirconium is a metal that is three times stronger and more resistant to torsion, corrosion and scratches than high performance steel. It is also used, fo…

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