耳机和音箱一样，也是电声转换器件，都是音响系统中一个非常重要的环节。目前介绍耳机的文章不多，似乎用耳机欣赏音乐不够档次。其实不尽然。许多老发烧友都不会忘记，他们的发烧起点就是从“大声牌”（60年代）耳机开始的。当然今非昔比，本文谈到的是立体声、高保真、发烧级 Headphones and speakers, but also electro-acoustic conversion devices, audio systems are a very important part. At present, few articles on the headset, it seems to enjoy music headphones enough grades. In fact, not entirely. Many older fans will never forget that their starting point for fever started with ’loudspeakers’ (60s) earphones. Of course, this is not the case, this article is about stereo, high fidelity, fever level