Exceptional audio quality. The PRO Series headphones combine the finest materials with Yamaha's legendary tuning know-how to deliver a superb listening experience. They incorporate a newly-developed Yamaha-proprietary driver design with neodymium magnets that provide maximum efficiency when used with mobile devices. The ear cushions offer excellent acoustic properties by way of meticulous attention to material selection and shape design. Fuel-injected design. Drawing inspiration from the world's finest musical instruments and motorcycles, the PRO Series headphones get your heart racing before you even plug them in. Gorgeous geometry and ultra-clean design curves are matched with premium color and finish materials, then emblazoned boldly with Yamaha's iconic tuning-fork marque.