dt770pro: closed back(studio,stage) 录音，舞台监听？？
dt880pro:reference monitoring 什么鬼？？
dt990pro:critical listening,mastering 这又是什么
以下全程求翻译
beyerdynamic's DT770,880and 990pro headphone series has It's roots in the early 1980s.
since then, millions of audio professionals from all parts of the world have become loyal users of beyerdynamic products.
The series has been designed to cater for listening in a wide variety of environments,thanks to different headphone construction.
The 32 Ohms version of the DT770pro is the latest addition to the series and has been optimized for use with portable devices.A special version of the dt770pro is also available in the form of the dt770m,which is made specifically for very loud environments such as live venues.
But what all of them have in common is the beyerdynamic DNA:ultra-precise and analytical sound,extremely robust quality(hand-made in germany)and a long service policy.
Designed and built to last,the dt770,880and 990 headphones are tools that you can rely on to help you get the job done-today and in the future.
反正就是吹有多好是吧？？

反正就是好好好买买买！
　　　--我只爱亚亚

能看懂，但是文笔不好都是大白话，顶一个

好好好

机翻一下

880pro:参考级监听
990pro:音乐后制监听
大概吧?

基本能看懂

我明天看看

我来翻吧!
拜耳动力DT770,880跟990 pro系列耳机皆起源自1980年代早期。
从那时起，数百万来自世界各个地方的音频专业人士，皆成为其产品的忠实用户。
此系列专门设计成可以广泛迎合各种不同的使用环境，感谢它那多样的结构设计。
先翻到这，本人英检初级，内容可能有误。