Sennheiser HD 820 Over Ear Closed Back Headphones (Open Box) iem cables 15 GB) Software Operating System

15 GB) Software Operating System Sony original OS System Requirements Mac OS X 10

Dimensions: 50mm (L) x 62mm (W) x 22mm (H)

circumaural ear cup design

Frequency Response: 7 - 41

Weight:    315g

Sennheiser HD 820 Over Ear Closed Back Headphones (Open Box) iem cables 15 GB) Software Operating SystemHD 820 The new audiophile standard The critics said closed headphones could never sound as immersive as their open air counterparts. They said physics would never allow it. To that we simply said, "listen". The HD 820 combines an innovative glass reflector and ring radiator transducer technology for a benchmark listening experience. Reference class open back audiophile headphones Closed back earcups 56mm ring radiator transducers German craftsmanship