The first time anyone has used headphones of this type. Everything is still working properly after 4 years with the old mdr xb950b1, thus there are no intentions to replace them for at least another 5 years. You're going to want to keep those cans on your head as you play a few songs from the other side. There is also no perceivable "foreground" noise from passing vehicles or pedestrians (residents of megacities, especially capitals, will be familiar). Since the invention of headphones that demonstrate what "absence of background noise" means, I've found that ordinary activities like walking, transit, etc. are no longer pleasant. Overpriced items are a common topic of articles. It's true that the cost can be prohibitive, but once you start taking advantage of all the in-built options, you'll begin to appreciate what an engineering marvel these headphones truly are. This review is not meant to be taken as gospel; for more information, readers are encouraged to check out alternative resources, such as w3bsit3-dns. Com, video reviews, etc. The reader is thanked for his or her time: