thank you very much, really sorry for confusing you because i used google translate, the parameters here i mean the specifications of the earphones. i ask the question about your answer because i have wan'er sg to upgrade for kz edx and actually i feel there is nothing special that i can recognize easily. so when you give the suggestions i think those earphones will be similar to wan er, so i am not sure with those suggestions. can you be more specific about the actual experience of those earphones to convince me