Audio Technica ATH-A1000Z Art Monitor Closed Back Dynamic Headphones Newly designed 53 mm drivers with OFC-7N bobbin-wound voice coils Hand-assembled drivers include top-mounted PCB and pure iron yoke High-rigidity aluminum housings Lightweight magnesium alloy baffle decreases unwanted vibration 3.0 m (9.8-foot) OFC-6N dual-sided, four-core cable with elastomer sheath