Actually the QT5 are under 20$ so I can get a pair, Damn! Just when I was going to place an order, you show me the QT5 Actually they are under 20$ so I can get them. The 2 pins cord is B or C? I mean the zs3/4 cable I have are compatible? Can you drive them as well as KZ iem on a good smartphone like the S10+?