Beyerdynamic DT 770 Pro - 32 ohm, for mobile applications
Beyerdynamic DT 770 Pro Headphones - (32 ohm). In the early 80s, beyerdynamic achieved a real milestone in the history of audio technology. Manufacturer Beyerdynamic. History of DT 770 PRO / DT 880 PRO / DT 990 PRO.