ssnjrthgr8
Head-Fier
Graphene? KZ has a new DD?It's hard to say will it be a good purchase or not. But you have to notice that there is gonna be a graphene DD (which promises a good, deep bass, better than in the zs10) and a crossover for only two drivers per side. I predict that the es4 will be just about a good, balanced sound with nice bass and soft but pretty detailed treble.
As for me - $15-$18 is a good price to try it
I'm waiting for the ed15 and the next stop will be the es4, for sure