Male Side is mmcx plug: This convert is worked for 2pin cable connected with shure earbuds,suitable for Shure SE215 SE215-K SE315 SE846 UE900 earphones,for LZ a4 a5,PRO HQ5 HQ6 DQSMD2 MAGAOSI-K5 YINYOO-H5 VT,UM PRO Series:UM PRO30,Series: W10 etc,AM Pro Series: AM10,ES Series: ES10, etc,for SONY XBA-A3,JVC: HA-FX1100,for PIONEER: DJE-2000,for ONKYO:ES-CTI300,Fiio f9, f9 pro,FH1,F5 etc. Female Side is 2pin plug: This convert is worked for 2pin cable connected with different mmcx earbuds Audio Unchanged: The adapter is small and convenient. It does not improve the sound quality, nor does it change the original sound quality of the headset. Many Types: We also have many other types adapters which can help you to resolve the different cables connected to different earbuds.Let you enjoy the DIY HiFi life.Provide more possibility. Your 100% Satisfaction Guarantee: We pay special attention to the customer experience and always strive to provide you with the best experience.You can completely add our Headphone Accessories to your shopping cart. Precautions for Product Use: 1. Please confirm whether the model is suitable before inserting the adapter. 2. After confirmation, make sure that the adapter has been stably inserted into the earphone/wire. 3. If it is not completely inserted, it may cause the adapter to be loose during use, which will affect the use experience of the product. If you confirm that there are still other problems after the above operation, please feel free to contact customer service and we will solve them for you! Thank you for your understanding and recognition!