Amazon.com: Geekria Boom Mic Headphones Cable Compatible with Sennheiser HD 599SE 598 560S, 2.5mm Jack Nylon Braided Replacement Cord with Boom Microphone and Volume/Mute Control for Gaming & Meeting (6 ft) :
Sennheiser HD 598 Special Edition Over-Ear Headphones (Great Condition) | eBay
Amazon.com: Sennheiser HD 598 SR Open-Back Headphone "Discontinued by manufacturer" : Electronics
Amazon.com: Sennheiser HD 598 SR Open-Back Headphone "Discontinued by manufacturer" : Electronics
Review: Sennheiser HD 598SE (Neutral Sound Signature) - Headphonesty
Sennheiser HD 598 Stereo headphones at Crutchfield
Sennheiser HD 598 SE* Review (headphone) | Audio Science Review (ASR) Forum
Amazon.com: Sennheiser HD 598 Special Edition Over-Ear Headphones - Black (Discontinued by Manufacturer) : Everything Else
Amazon.com: Sennheiser HD 598 Special Edition Over-Ear Headphones - Black (Discontinued by Manufacturer) : Everything Else
Sennheiser HD 598 | Headphone Reviews and Discussion - Head-Fi.org