Key Features：

1. The Strongest KZ Hybrid IEM Solution So Far – 1DD+5BA Upgrade – Upgraded from the single dynamic driver + balanced armature hybrid to the dual dynamic driver + balanced armature hybrid. Adds an advanced acoustic configuration of 2 dynamic drivers and 4 balanced armatures, achieving a more powerful and stunning hybrid design – delivering exceptional sound quality.

2. Dual Dynamic Driver Advantage – Richer and More Delicate Sound Quality – Leveraging the advantages of the dual dynamic drivers to conduct a more precise output of sub-bass and bass frequencies. 10mm super-linear DD handles powerful low frequencies, while 8mm high-performance DD handles high-resolution bass frequencies – precise division of labor for outstanding performance.

3. 10mm Super-Linear Dynamic Driver Unit – Powerful Low-Frequency Output – The working power for the low-frequency range. Provides extremely deep and surging bass, laying a solid foundation for low-frequency performance – powerful, impactful bass.

4. 8mm High-Performance Dynamic Driver – High Resolution & Rich Layering – It performs better in the sub-bass frequency range. Enhances the performance of bass and extreme bass frequencies. The sound image and cohesion are perfectly integrated – rich details and excellent layering.

5. 30019 Balanced Armature ×2 + 31736 Composite Balanced Armature ×1 – 30019 BA handles mid-frequency with clear, delicate, and natural sound. 31736 BA handles high-frequency with excellent extension and rich details – precise frequency division for optimal performance.

6. Two Versions Available – Standard & Tuning – Standard Version: Without tuning switches, default tuning for most listeners. Tuning Version: With tuning switches, supporting custom tuning for professional listeners. 4-level tuning switch (Switch 1/2/3/4) – customizable low and high frequency adjustment.

7. Stunning and Outstanding Acoustics Parameters – True Professional HiFi Level – A more professional and excellent acoustic curve. Achieves a more balanced frequency response across high and ultra-high ranges. Delicate and bright, bringing more beautiful music to your ears – ideal for appreciating music and life.

8. Amazing Bass Performance without Any Muddiness – The 10mm + 8mm dual dynamic driver combination delivers deep, impactful bass. Full and rich bass with no muddiness – pure, textured low-end that brings music to life.

9. Built-in Professional-Grade Filter – Supporting User-Defined Tuning – Equipped with a 4-position tuning switch, allowing you to freely adjust according to personal preferences. Pursue surging bass or delicate high frequencies – find your ideal sound signature.

10. Ergonomic Exterior Design – Comfortable Wearing Experience – Ingenious exterior design skillfully combines the solid texture of metal with the warm touch of resin. 3D-printed cavity with metal inlay – comfortable, lightweight, and durable.

11. Professional Detachable 0.75mm 2-Pin Design – Standard 0.75mm 2-Pin connector supports cable upgrades. Multifunctional in-line control with HD microphone for clear calls and convenient music control.

12. High-Purity Silver-Plated Upgrade Cable – Silver-plated cable ensures excellent electrical conductivity and signal transmission. Reduces distortion and enhances sound quality – clean, transparent audio.

13. Product Information – Model: ZA12, Impedance: 45Ω, Sensitivity: 103dB, Frequency: 20Hz-40kHz, Plug Type: 3.5mm, Pin Type: 0.75mm, Cable Length: 120±5cm, Colors: Silver/Black.

Detailed images：