Is there any way to date a pair of HD600s? I'm curious since mine were bought pre-owned.
I have the hinged (blue) box that it came with, but no outer packaging.
I cannot find a serial number anywhere on them.
Here is the paperwork, maybe this can shed some light?
I have the hinged (blue) box that it came with, but no outer packaging.
I cannot find a serial number anywhere on them.
Here is the paperwork, maybe this can shed some light?
