Thank you for these answers.
I guess I'll try to figure out what's the real issue. Yeah I don't think there's a Koss center in Europe dealing with RMAs. Ideally I would try to get the total cost (buying the pair used, sending them for repair, paying the servicing) for less than €450 since it would have been the price of a new ESP/95X system from Massdrop (roughly $507 including shipping)
I guess I'll try to figure out what's the real issue. Yeah I don't think there's a Koss center in Europe dealing with RMAs. Ideally I would try to get the total cost (buying the pair used, sending them for repair, paying the servicing) for less than €450 since it would have been the price of a new ESP/95X system from Massdrop (roughly $507 including shipping)