Sennheiser HD 558 Review - Audiophilia on a Budget - Member Reviews - Linus Tech Tips
Amazon.com: Geekria Shield Headphones Case Compatible with Sennheiser HD 599, HD 598, HD 560S, HD 559, HD 558, HD 555, HD 400 Pro Case, Replacement Hard Shell Travel Carrying Bag with Cable Storage (PU Brown) : Electronics
Sennheiser HD 558 Over-Ear Headphones $90 shipped (orig. $180)