Help me identify these headphones?

[Pikajuice]

I recently came up these beyerdynamic partially open (I think?) headphones and have been having trouble figuring out exactly what model they are. They have a toggle for each driver with four positions from closed to open. These seem to most profoundly affect the bass range. There isn't any identifying information on them aside from the company logo. I've tried some searching myself but have come up with nothing. If anyone could help me figure out what model these are that would be awesome. If for no other reason than to satisfy my nagging curiosity. Thanks!






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[Deleted member 188533]

The Beyerdynamic Custom Studio and Custom Game have bass ports like that but the backs and pads are different.


Any idea how old they are?

 

[Deleted member 188533]

It's from that Custom family. They're the only Beyers I can find with that back shape.

 

[Big Aura]

Beyerdynamics Custom One Pro?

https://www.reddit.com/r/headphones/comments/c7lef5

View: https://www.reddit.com/r/headphones/comments/c7lef5/my_beyerdynamic_custom_studio_powered_by_dacx6/

https://flic.kr/p/d8LrGj

View: https://www.flickr.com/photos/mr_ultra/7964168054/

 

[Pikajuice]

Thanks so much for the help everyone!