Alphatec HD25 25sp 560 540 480 430 414 250 Replacement Audio Cable, Compatible with Sennheiser Headphones, 3.5mm (6.35mm) to 2.5mm Male Stereo Jack Cord, coiled cable, 5 Ft (1.5 meters), Black

I have bought aftermarket cables for my Sennheiser HD25 before and they have been quite problematic - one of the mains issues is the little red and black plugs often don't fit. These, however, pushed straight into the headphone cup no problem.They sound fine, my only complaint is the coiled wire has several kinks in it. You get what you pay for and for the price I am happy with the cable