Review on KZ ES4 Hybrid Dual Driver High Fidelity Earbuds for Extra Bassy Audio Experience (Green, No Mic) by Kimberly Thomas

Despite a superficial resemblance to the ZS10, this dual driver (one dynamic, one symmetrical anchor) has a truly classic KZ sound signature with insane power for a subwoofer, crystal clear mids that can be a bit harsh at high volume settings without equalizer - and detailed highs out of the box. At a reasonable volume, this baby sounds great right out of the box. The construction is solid. The detachable cable is a nice bonus. For the money they have no equal.