KZ ZS1
Ø8mm + Ø6.8mm Dynamic Drivers

The premium-looking dual-driver KZ ZS1 are very good earphones to have, especially if you like decent bass. However, you'll most likely have a trouble fitting these into your ears properly.

Pros
Cons
  • Pretty clear sound quality overall.
  • The bass goes pretty deep, if you can push the earphones deep enough.
  • A very premium design and pretty solid build quality, even if plastic.
  • The bass gets slightly distorted at high volume or deep bass drops (like in Dubstep and Trap music).
  • It is very difficult to fit these oddly shaped earphones inside the ears and get a good seal.
Package & Accessories
Package:
Corrugated fiberboard
Ear Tips - Single-Flange:
M, black (translucent), Ø4mm red bores
S+M+L, black (translucent), Ø4mm bores
Build & Design
Housing:
Plastic (glossy), Ø6mm nozzles (Ø2mm openings), built-in memory wire
Y-Split:
TPE, soft strain reliefs
Cable:
Silicone (grippy), soft, straight
Plug:
TPE, 90° angled, short, soft strain relief
Comfort & Fit

No matter how I placed it, no matter which tips I tried, they just don't stay all the way inside. I had to push them in as I listened to them to hear the sound properly.

Lows / Bass

The bass has impact and sound nice, but if your seal is too good it gets muddy. Either way, you need to get a perfect seal to hear the bass properly. When the bass gets deep, it's slightly distorted.

Mids / Vocals

The vocals sound nice, but sometimes overpowered by the bass. They are not so bright either, and have a dark-ish signature to them.

Highs / Treble

The highs are loud by not as bright as I would want them to be, which is probably the result of a rather warm sound signature.

Frequency Response
Reviewed on 2015-11-23 17:24:09 (UTC)
KZ
ATE
C56R
DT5
ED2
ED3 Youth Version
ED4
ED9
ED10
ED11
EDR2
GR
HDS1
HDS2
HDS3
IE80
RX
S3
ZS1