Disappointed I didn't pick these up sooner. They're fantastic and way better than my old headset

My headjack that connects the headphone to the mic and headset end (green and red) is broken, what do I need to buy to get it replaced? The single port end seems shorter than 3.5mm and is smaller than the port of the mic and headset end. May I know what size to if I necessarily need the exact same one that connects mic and headset or I can just get a single port to single port end? Would I need to completely replace the headset? Also I'm currently residing in Malaysia where ebay and amazon isn't available and I can't seem to find anywhere else that sells it. Is there anyone that can link me to the item that ships to Malaysia?

Hi I am new to the community. Just want to know about these two ear cup dimensions. I am a previous owner of HD58x. Wonder if they share the same ear cup size or maybe HD58x is much bigger? Thanks!

I am looking for recommendations on a good headphone/amp setup for music creation. My son is making music on his pc and has just been using his gaming headphones. I want to get him a better setup. Budget is in the $200 - $400 range total. I personally like Sennheiser but I don't think he has any prefrences. The music is a mix of electronica, dubstep, and video game music. It seems very light on bass to me for dubstep, but hey, to each their own. https://www.youtube.com/watch?v=oJD1_KNeEhI this is one of his videos for reference. Thanks in advance for the help

This is a head set which is one of a kind.