Introducing the latest Sony Extra Bass headphone series – the MDR-XB920 and MDR-XB610 (that was quite a mouthful). The uber chic MDR-XB920 features a 50 mm driver units and high-energy neodymium magnets that serves to reproduce note to note from the deepest bass to the highest treble your music the way it is meant to be played. If that is not cool enough, it also has the specially designed Direct-Vibe structure that creates that perfectly sealed acoustic enclosure when we are enjoying our favorite music for that mind blowing levels of euphonic euphoria~!