KZ ZSX is a hybrid entry-level IEM for bass lovers. It has 5BA + 1DD for each ear. It performs nicely on higher end and low end. As, I am a bass lover and I am always in search of detailed and non-compromised bass. This IEM performs pretty well for bass and sub-bass. I found many missing corners of bass which I have never heard before. Though It has 24 Ohms of impedance but I found it bit difficult to drive with my Samsung Galaxy smartphone. That is why I used NX1s to drive KZ ZSX. Overall, It a good purchase for me. Thumbs up!
Pros:
1. Hybrid configuration for serious performance.
2. 24 Ohms impedance.
3. Can compete easily with costlier IEMs.
4. Great response to equalizer.
5. Great build quality under 5k.
6. Attractive packing.
![](https://i.ytimg.com/vi/xBro3uAFZOo/mqdefault.jpg)