Yinyoo ZST
Score: 74/100
Yinyoo KZ ZS12 PRO
Score: 82/100Rankings
The KZ ZS12 PRO is a premium hybrid IEM featuring a 1DD + 5BA driver layout, metal housing, and a tunable 4-level switch, delivering detailed, bass-rich sound for gamers and audiophiles. Its build quality and optional tuning make it stand out in the sub-$100 segment, though the stiff stock cable and fragile tuning switch are potential drawbacks. The inclusion of a microphone and dual connectivity (3.5 mm/USB-C) adds versatility.
The YINYOO Easy KZ ZST is a budget-friendly hybrid IEM that combines a balanced armature and a dynamic driver for lively, detailed sound. Its ergonomic memory-wire design, multiple silicone tip sizes, and detachable cable provide comfort and versatility, while the lack of wireless features and occasional bass distortion keep it in the entry-level segment.
| Attribute | | |
|---|---|---|
10 mmbest | 10 mmbest | |
20 Hzbest | — | |
20,000 Hz | 40,000 Hzbest | |
106 dB | 109 dBbest | |
18 Ω | 35 Ωbest | |
| ↓ lower better | 20 gbest | 58.9 g |
12 monthsbest | 12 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(4) | ||
Frequency Response (High) (Hz) | 20000 Hz | 40000 Hz |
Sensitivity (dB) | 106 dB | 109 dB |
Impedance (Ω) | 18 Ω | 35 Ω |
Microphone | false | true |
Build & Design(2) | ||
Weight (g) | 20 g | 58.9 g |
Ear Tip Sizes | S/M/L | Multiple eartips (including foam) |
Battery & Power(1) | ||
Charging Port Type | 3.5 mm | 3.5mm TRS, USB-C |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the KZ ZST for its rich, energetic audio performance, noting the hybrid driver setup provides clear separation and a lively soundstage, while highlighting its ergonomic design and exceptional value.
Everyday users consistently commend the earphones for impressive sound quality, comfortable fit, and the convenience of a detachable cable, but mention occasional bass distortion at high volume, stiffness of the stock cable, and confusion over mic-less versions.
Professional reviewers highlight the ZS12 PRO series for its sophisticated hybrid driver architecture and the rare inclusion of an electronic crossover, delivering a highly detailed and balanced soundstage, though critics note that the bass can overwhelm mids in the stock tuning.
Everyday users consistently praise the ZS12 PROs for their value, deep bass, clear treble and solid metal build, while common complaints revolve around the stiffness of the stock cable, the fragility of the tuning switch, fit variability and the lack of a carrying case.
“The sound quality is amazing, and the noise cancellation is great.”
“Incredibly comfortable for long sessions-perfect for work and travel.”
“The removable cable is a game-changer; I upgraded to a silver cable and the sound improved noticeably.”
