The DT 770/990 PRO is made for musicians, sound engineers, producers as well as beginners looking for a reliable, sturdy and affordable pair of headphones as a working device.
The DT 1770/1990 PRO was developed for sound engineers, producers and musicians looking for a pair of high-end studio headphones with uncompromising performance in all relevant aspects such as sound, design, comfort and accessoires.
Further details can be found on the respective product pages.