OK, if the 599 is the same. I simply googled, and found this for hd598: https://www.amazon.com/Sennheiser-HD-598-Over-Ear-Headphones/dp/B0042A8CW2 https://www.a

OK, if the 599 is the same. I simply googled, and found this for hd598: https://www.amazon.com/Sennheiser-HD-598-Over-Ear-Headphones/dp/B0042A8CW2 https://www.amazon.com/Sennheiser-HD-598-Over-Ear-Headphones...