Nokia AD-52 3.5mm to 2.5mm Audio Adapter

Perfect for Sennheiser hd598 mod.Now I can use any standard 3.5mm cable with my Sennheisers, instead of the stupid fiddly 2.5mm cable that came with them.This is the best audio adapter you can buy for these headphones but you do have to dismantle them and remove some pieces, so if you aren't tech savvy or are afraid of breaking them then I wouldn't bother.