
Yinyoo ZST
Score: 74/100
Amazon Basics AMZ-E8090A
Score: 68/100Rankings

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 Amazon Basics USB-C Wired Earbuds deliver reliable sound and a convenient plug-and-play experience for Android users, though they miss premium features like volume controls and water resistance.
| Attribute | ![]() | ![]() |
|---|---|---|
10 mmbest | — | |
20 Hzbest | 20 Hzbest | |
20,000 Hzbest | 20,000 Hzbest | |
106 dBbest | 94 dB | |
18 Ωbest | — | |
| ↓ lower better | 20 g | 12.8 gbest |
12 monthsbest | 12 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio(2) | ||
Sensitivity (dB) | 106 dB | 94 dB |
Microphone | false | true |
Build & Design(2) | ||
Weight (g) | 20 g | 12.8 g |
Ear Tip Sizes | S/M/L | Small, Medium, Large |
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 note the solid value, clear mic and comfortable fit, while pointing out the lack of volume control and modest sound profile.
Everyday users like the USB-C convenience and comfort, but some report cable durability issues and wish for volume controls.
“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.”


