KZ ZST

The hybrid that started it all: 1 dynamic + 1 balanced armature

Drivers: 1 dynamic + 1 balanced armature
Impedance: 16 Ω
Connector: 0.75 mm 2-pin

€24

Incl. 21% VAT

Order before 16:00, delivered tomorrowIn stock · Free delivery over €50 · NL & BE

30-day free returns
2-year warranty, handled by us
Shipped from the Netherlands
Advice from people who listen

Pay with iDEAL, Bancontact, card, PayPal or Klarna

Overview

One dynamic driver for the bass and one balanced armature for detail, in a colourful shell. The ZST made hybrid IEMs affordable and is still a fun, energetic listen. Version without microphone.

1 dynamic + 1 balanced armature
16 Ω, 106 dB/mW
Detachable 0.75 mm 2-pin cable

How it sounds

Frequency response

Dashed line: the Harman IE 2019 target

KZ ZSTHarman IE 2019 targetdB, normalised at 500 Hz

Measured by Hawaii Bad Boy (IEC 711 clone), published on squig.link. Independent measurement, not by us. Measuring rigs differ slightly above 8 kHz.

Sound signature

Harman

Research-backed tuning most listeners prefer: gentle bass lift, natural mids.

Read from the measurement above: bass and treble compared with Harman IE 2019. One curve gives an indication, not the final word.

The ZST has a solid mid-bass hump (about 3.5 dB over the target between 100 and 250 Hz) without much extra sub-bass. Higher up, the curve zigzags: a bump at 2 kHz, a dip of about 5.5 dB around 3.5 kHz and a peak at 5 kHz. That makes for an energetic, slightly uneven sound with plenty of bite on snare drums and 's' sounds. Fun for rock and electronic music at a low price.

Bass: Lifted+1.7 dB
Mids: Neutral+0.5 dB
Treble: Relaxed−1.2 dB