Short answer: the KZ EDX Pro, though neither ranks well in its class. Both are rated 2.7/5 for sound quality (#1057 and #1061 of 1291 in-ear headphones), and the KZ EDX Pro costs $17.99 against $22.99 for the NiceHCK DB2, and with sound quality even, the cheaper one is the better buy. Both are rated below 3.0/5 among the 1291 in-ear headphones; for better sound, the EPZ G10 ranks #16 at $23.74.
The case for the KZ EDX Pro: It costs very little and is easy to drive, with 24 ohm impedance and a 112 dB sensitivity rating that suit a phone. Watch for: Crinacle’s measurement gives it a preference score of 58, well short of what most listeners prefer.
The case for the NiceHCK DB2: Bass is lifted about 2.9 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. The catch: Presence sits about 4.5 dB low with a 10.3 dB dip near 4.6 kHz, so vocals and instruments lose some bite.
Buy the KZ EDX Pro. Both are rated the same for sound quality, and it costs $5 less than the NiceHCK DB2.
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It costs very little and is easy to drive, with 24 ohm impedance and a 112 dB sensitivity rating that suit a phone.
Amazon $17.99 eBay
Bass is lifted about 2.9 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
NiceHCK $22.99 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 EDX Pro | NiceHCK DB2 | |
|---|---|---|
| Price | $17.99 | $22.99 |
| Ranked | #1057 of 1291 in In-Ear Headphones | #1061 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 58 (measured by crinacle, via AutoEQ) | 58 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.91 dB standard deviation | 3.13 dB standard deviation |
| Tonal Tilt | -1.10 (negative is warmer, positive brighter) | -0.75 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic + 1 x balanced armature |
| Impedance | 24 ohms | 16 ohms |
| Sensitivity | 112 dB | 107 dB/mW |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Back | Closed | Closed |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.6 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 EDX Pro from achoreviews, aden, aftersound, ankramutt, bassyalexander, eplv, hbb, jacstone, lown-fi, melatonin, obodio, precog, pw, rg, superreview and vortexreviews; the NiceHCK DB2 from achoreviews, audioamigo, awsmdanny, cqtek, eplv, jaytiss, obodio, riz, silicagel, suporsalad, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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