Short answer: the NF Audio NA3. Both are rated 3.6/5 for sound quality (#725 and #726 of 1291 in-ear headphones), and the NF Audio NA3 costs $69.99 against $74.99 for the KZ AS10 Pro, with sound quality a draw, the lower price decides it.
The case for the KZ AS10 Pro: An inexpensive all balanced armature IEM with five drivers per side. The tradeoff: Treble sits about 2.0 dB above target, so it can sound bright.
Why pick the NF Audio NA3: A single dynamic IEM with a dual cavity design. The catch: A 2.33 dB spread from the target shows peaks and dips that better tuned sets avoid.
Buy the NF Audio NA3. Both are rated the same for sound quality, and it costs $5 less than the KZ AS10 Pro.
Still deciding? The full Headphones rankings cover every ranked option.
An inexpensive all balanced armature IEM with five drivers per side.
Amazon $74.99 eBay
A single dynamic IEM with a dual cavity design.
Shenzhenaudio $69.99 eBayPrices on this page were last checked October 16, 2026 at 5:46 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
| KZ AS10 Pro | NF Audio NA3 | |
|---|---|---|
| Price | $74.99 | $69.99 |
| Ranked | #726 of 1291 in In-Ear Headphones | #725 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Balanced Armature | Dynamic |
| Drivers | 5 x balanced armature | 1 x dynamic (dual cavity) |
| Impedance | 26 ohms | 32 ohms |
| Sensitivity | 109 dB | 105 dB |
| Harman Preference Score | 69 (median of 7 squig.link measurements, calibrated to AutoEQ) | 69 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.94 dB standard deviation | 2.33 dB standard deviation |
| Tonal Tilt | +0.35 (negative is warmer, positive brighter) | -0.48 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.4 dB at 30 Hz) |
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 KZ AS10 Pro from bassyalexander, enemyspider, melatonin, musicafe, silicagel, soundcheck39 and vortexreviews; the NF Audio NA3 from arn, ianfann, musicafe and vortexreviews, all via squig.link.
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