Yinyoo ZST
Score: 74/100
Soundcore A20i
Score: 72/100Rankings
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.
The Soundcore A20i offers impressive battery life, fast charging and a gaming mode at a budget price, but it lacks ANC and premium build quality. It is best suited for commuters, fitness users and gamers who value long playtime over high-end features.
| Attribute | | |
|---|---|---|
— | 9 hoursbest | |
— | 10 mbest | |
10 mmbest | 6 mm | |
20 Hzbest | 20 Hzbest | |
20,000 Hzbest | 20,000 Hzbest | |
106 dBbest | 98 dB | |
18 Ω | 32 Ωbest | |
| ↓ lower better | 20 gbest | 40.8 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(4) | ||
Driver Size (mm) | 10 mm | 6 mm |
Sensitivity (dB) | 106 dB | 98 dB |
Impedance (Ω) | 18 Ω | 32 Ω |
Microphone | false | true |
Warranty(1) | ||
Warranty Period (months) | 12 months | 18 months |
Build & Design(3) | ||
Weight (g) | 20 g | 40.8 g |
IP Rating | unknown | IPX5 |
Ear Tip Sizes | S/M/L | Small silicone ear tips |
Battery & Power(1) | ||
Charging Port Type | 3.5 mm | 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 view the A20i as a solid budget option that delivers strong bass, good treble, and impressive battery life, especially thanks to its 22 EQ presets and gaming mode. However, they point out fit issues due to small ear tips, the lack of custom EQ, and a flimsy charging case.
Everyday users love the long battery life, clear calls, and the ability to tweak sound via the app, but many complain about the tiny, rough ear tips, a loose fit, and occasional firmware hiccups. The case's cheap feel and lack of volume control are also frequent gripes.
“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.”
