Yinyoo Audio provides high quality products for our customers with a keen eye for design and performance, striving to deliver the better sound quality possible no matter the cost.

KZ ZST In ear monitors with enhance the sound quality and exterior again the hybrid technology.

Why choose yinyoo kz zst iem？

1.Exclusive colorful housing by acoustic resin material

2.Professional division of physical frequency quality tuning technology

3.The standard of independent patent technology silicon tips

4.The lower the internal resistance of professional wire , The design of human nature

5.A specially designed HD call microphone

6.The armature + dynamic unit sound advantage complementary ,give more details of music show

7.congenital advantage ,the experience is really HIFI!

8.Driver performance is tough ,bass bursts are more powerful

What sound can you heard? These are coming from customers:

• KZ ZST - crystal clear highs and centered mids for a bass-oriented IEM.
• Nice tight bass, smooth (not dull) mids, and clear highs. Very good sound stage.
• What a wonderful balance with a very present but controlled low end and perfect clarity without being shrill.
• It is very nicely balanced with good clean bass, smooth midrange, and satisfyingly bright highs (without being harsh at all). By the way, the bass is not overpowering at all: it's just natural. But on tracks with heavier bass, or when boosted with an EQ, the ZSTs handle it with aplomb.

There are many factors that shape the final sound an IEM delivers to one's ear. Those factors include:

1 - Shape and size of the reviewer's ear canals. (shallow or deep, wide or narrow)

2 - Shape and size of the ear tips [round or cone, single, double or triple flange] & proper fit

3 - Materials of the ear tips (silicone/foam)

4 - The shape of the IEM (and/or angle of the nozzle) can cause fitment issues for some.

5 - Source (quality of smartphone, laptop, digital audio player) is amplified/unamplified.

6 - The IEM itself (driver flex possible due to trapping air in canal causing muffled sound.

7 - The Reviewers ability to hear all frequency ranges (age plays a factor).

8 - Burn the earbuds at low volume for 24 hours, the sound will be better.

How to connect cable and wearing? lower music volume before connecting earphones with audio devices to avoid earbud's diaphragm damage.

Product features：

Driver unit: 1DD 1BA

Impedance: 10ohm

Sensitivity: 106dB/mW

Frequency Response: 20Hz-40000Hz

Length:120cm±5cm

Plug:3.5mm L plug

There are new color upgraded cable, pls note new and old cable will be sent out randomly.