I need help with choose stereo cord

[SWEETMUSK]

My headphone is Sony MDR10RNCIP (White)
http/Sony MDR10RNCIP

I got a problem after I bought a asus xonar dx 7.1 sound card
https/www.asus.com/us/Sound-Cards/Xonar_DX/
this sound card doesn't seen support a cord that has 3 lines on the jack
It works perfectly on my sister's headphone that has 2 lines on the jack, but not on my Sony MDR10RNCIP.
I not sure why, I think I have to buy a cord that has 2 lines on the jack
May anyone please recommends me a white 5~8 feet white cord that has 2 lines on the jack?
I not sure which one will fit to my headphone, because it has its own size connects to the headphone
~8 dollars
thank you very much

 

[noidea_77]

You need a splitter to separate the headphone from the mic: https/www.amazon.com/Damomon-Female-Headset-Splitter-Adapter/dp/B011IKHHTW/ref=sr_1_9?s=electronics&ie=UTF8&qid=1467538318&sr=1-9&keywords=headset+splitter