I have the OG models with the 2.5mm jacks on the cups and the cable is dying, getting tons of static when I move my head and it’s so bad now I can’t stand it anymore.
I would invest in Hart Cables, but right now I don’t have the coin, so need to get something to patch the issue right now.
4.4mm Pentacon or full size XLR (I have a Hart 4.4mm to XLR I ordered some time ago) to 2.5mm and about 4 or 5 feet in length. I don’t really care about the color, as long as it’s not pink or some obnoxious neon color, etc.
I’m in Canada, so Amazon.ca would be best. 