Yinyoo ZSN PRO X
Score: 76/100
FiiO FF1
Score: 65/100Rankings
The KZ ZSN Pro X is a budget hybrid IEM with a 10 mm dynamic driver and a balanced armature, offering solid bass and clear mids. Its metal construction and detachable cable add durability, but the stock cable's durability and lack of a microphone limit its convenience. Ideal for gamers and audiophiles seeking value at sub-$50.
The FiiO FF1 is an entry-level wired earbud with a large 14.2 mm driver, high sensitivity, and a generous accessory bundle. While comfortable and easy to drive, its bass is modest and the semi-proprietary connector may limit upgrades.
| Attribute | | |
|---|---|---|
10 mm | 14.2 mmbest | |
20 Hzbest | 20 Hzbest | |
20,000 Hzbest | 20,000 Hzbest | |
104 dB | 106 dBbest | |
25 Ω | 45 Ωbest | |
| ↓ lower better | 49.9 g | 3.2 gbest |
12 monthsbest | 12 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(4) | ||
Driver Size (mm) | 10 mm | 14.2 mm |
Sensitivity (dB) | 104 dB | 106 dB |
Impedance (Ω) | 25 Ω | 45 Ω |
Microphone | false | true |
Build & Design(2) | ||
Weight (g) | 49.9 g | 3.2 g |
Ear Tip Sizes | 3 silicone eartips (S/M/L) | donut foam, full foam, silicone rings (L/M) |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the ZSN Pro for delivering high-end sound performance at a budget price, highlighting its deep, well-controlled bass, warm mids, and non-fatiguating treble, while noting cable discoloration and stiffness as drawbacks.
Everyday users overwhelmingly appreciate the sound signature-especially the clean bass and clear mids-along with the comfortable fit and premium look, though many complain about the cable's discoloration and stiffness.
Professional reviewers praise the FF1's large driver, low distortion, and natural timbre, but criticize its slow, untextured bass and early treble roll-off.
Everyday users appreciate the comfort, lightweight feel, and accessory variety, yet many complain about weak bass with silicone tips, fragile 2-pin connectors, and sound leakage from the open design.
“The bass is good and clean, the mids are clear, sound balance is very nice.”
“Cable turned brown after a few weeks.”
“Generous accessory bundle including USB-C adapter, multiple tip types, and wing hooks”
