Short answer: the ZiSin 340. It ranks #1014 of 1369 in-ear headphones by sound quality, rated 3.2/5, at $58; the KZ AS10 ranks #1094, rated 2.9/5, and costs $59.99, so there is little reason to consider the other one.
The ZiSin 340 is the better-sounding option. About 3 dB more bass than the Harman target below 150 Hz, for listeners who want a fuller low end. The catch: An uneven response, 2.5 dB standard deviation from target.
Why pick the KZ AS10: Five balanced armature drivers per side is an unusual layout at a modest price, and the bass sits about 6 dB above target between 60 and 200 Hz for listeners who want a thick, warm low end. The catch: That bass boost spills into the low mids, 3.3 dB over target, which muddies voices and guitars, and a 6.4 dB peak near 11.9 kHz adds glare up top in hobbyist measurements on squig.link.
Buy the ZiSin 340. It is rated higher for sound quality than the KZ AS10 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Headphones rankings.
About 3 dB more bass than the Harman target below 150 Hz, for listeners who want a fuller low end.
AliExpress $58.00 eBay
Five balanced armature drivers per side is an unusual layout at a modest price, and the bass sits about 6 dB above target between 60 and 200 Hz for listeners who want a thick, warm low end.
Amazon $59.99 eBayPrices on this page were last checked October 17, 2026 at 6:04 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| ZiSin 340 | KZ AS10 | |
|---|---|---|
| Price | $58.00 | $59.99 |
| Ranked | #1014 of 1369 in In-Ear Headphones | #1094 of 1369 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 63 (median of 4 squig.link measurements, calibrated to AutoEQ) | 60 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.54 dB standard deviation | 2.91 dB standard deviation |
| Tonal Tilt | -0.90 (negative is warmer, positive brighter) | -0.89 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Balanced armature |
| Drivers | 1 x 10mm dynamic driver (dual-cavity gold-plated composite film) | 5 x balanced armature |
| Impedance | 32 ohms | 14 ohms |
| Sensitivity | 123 dB/Vrms | 105 dB/mW |
| Frequency Response | 10Hz - 26kHz | 20Hz - 40kHz (Manufacturer specified) |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the ZiSin 340 from audioamigo, ducbloke, jaytiss and soundcheck39; the KZ AS10 from bassyalexander, dchpgall, melatonin and superreview, all via squig.link.
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