KZ S3 is basically a special edition for the ED3 Youth Version. Both earphones sound the same and the differences are: the package, the housings' color and the cable (including the Y-split and the plug).
?6.8mm Dynamic Driver
Package & Accessories
Ear Tips - Single-Flange:
S+M+L, black (translucent), ?4mm bores
Build & Materials
Metal, ?5mm nozzles, soft strain reliefs
TPE, stiff strain reliefs
TPE, 120cm, soft, straight
Metal, straight, short, soft strain relief
Comfort & Fit
I got a good seal with the pre-applied M-size tips. No problems at all. Still, the generic tips aren't the best at keeping the earphones inside.
Lows / Bass
A great bass quality and depth, just in the right amount, not too much sub-bass. Doesn't overwhelm higher frequencies, but also lacks significant impact.
Mids / Vocals
The vocals are very clear and precise. The great clarity and warm sound signature result in an enjoyable and exciting experience.
Highs / Treble
The highs are bright and crisp, but slightly cold and overemphasized, almost as bright as KZ ED9.
Reviewed on 2016-01-23 00:59:59 (GMT)
ED3 Youth Version
S3ZS1 ZS5 (V1) ZS6 ZS7 ZS10 ZS10 PRO ZSA ZSE ZSN ZSR ZST