The IE 600 from Sennheiser embodies the audiophile passion for quality with meticulous craftsmanship and exquisitely neutral sound. For exceptional lifetime durability and a unique premium aesthetic, the IE 600 features 3D printed housings made from ZR01 amorphous zirconium for triple the hardness and bend resistance of steel. Its dual resonator chambers eliminate masking resonances for exceptional fidelity, while Sennheisers TrueResponse transducers ensure incredible tonally neutral, intimate, true-to-life voicing and impactful bass response.