The Eikon H1000 headphones with its 50mm neodymium transducers offer you an unrivaled frequency response and total comfort that allows you to have an optimal listening experience. Professional Hi-End Closed-back Circumaural Headphones. 50 mm Driver size Dynamic Neodymium magnet. Single-side detached cable design. Two 3 meters cable types included. Comfortable fit due to rugged, adjustable, soft padded headband construction. 3.5 + 6.3 mm (1/4 in) stereo jack.