It is time to listen to all that your home entertainment system has to offer. Plug in the HD 559 with its open back over-ear design and high-class Sennheiser transducer systems. It will give you an excellent sound experience with a satisfying deep and contoured bass. Now you can rediscover all of your favorite music. The big, soft detachable ear pads of the HD 559 and its broad padded headband are every bit as comfortable as they look. For extra-long listening sessions with the great sound of the HD 559.