Short answer: the KZ EDX Pro X. It ranks #181 of 996 in-ear headphones by sound quality, rated 4.3/5, at $15.99; the KZ EDX Pro ranks #768, rated 2.7/5, and costs $17.99, so there is not much of a tradeoff to weigh.
The KZ EDX Pro X is the better-sounding option. A $16 single dynamic IEM that measures among the best budget models (score 78 across six measurements), with a tight 1.51 dB spread from the target and full sub-bass to 20 Hz. Watch for: The light plastic shell and basic cable reflect the price, and KZ’s published impedance and sensitivity figures vary between listings.
What the KZ EDX Pro does well: It costs very little and is easy to drive, with 24 ohm impedance and a 112 dB sensitivity rating that suit a phone. The catch: Crinacle’s measurement gives it a preference score of 58, well short of what most listeners prefer.
Buy the KZ EDX Pro X. It is rated higher for sound quality than the KZ EDX Pro and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| KZ EDX Pro X | KZ EDX Pro | |
|---|---|---|
| Price | $15.99 | $17.99 |
| Ranked | #181 of 996 in In-Ear Headphones | #768 of 996 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x dynamic | 1 x 10mm dynamic |
| Harman Preference Score | 78 (median of 6 squig.link measurements, calibrated to AutoEQ) | 58 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 1.51 dB standard deviation | 2.91 dB standard deviation |
| Tonal Tilt | -0.33 (negative is warmer, positive brighter) | -1.10 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+2.7 dB at 30 Hz) |
| Impedance | - | 24 ohms |
| Sensitivity | - | 112 dB |
| Frequency Response | - | 10Hz - 20kHz (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 KZ EDX Pro X from ankramutt, avishai, lown-fi, musicafe, obodio and tdl; the KZ EDX Pro from achoreviews, aden, aftersound, ankramutt, bassyalexander, eplv, hbb, jacstone, lown-fi, melatonin, obodio, precog, pw, rg, superreview and vortexreviews, all via squig.link.
Related Headphone Comparisons
More top alternatives to KZ EDX Pro X:
- KZ ATE vs KZ EDX Pro
- HIFIMAN RE400 vs KZ EDX Pro
- KZ EDX Pro vs Panasonic RP-HJE120
- KZ EDX Pro vs 1MORE Stylish
- KZ DQ6S vs KZ EDX Pro
Prices on this page were last checked October 14, 2026 at 2:38 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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The Two Headphones In Full
KZ EDX Pro X: $15.99 Amazon $15.99 eBay
Pros: A $16 single dynamic IEM that measures among the best budget models (score 78 across six measurements), with a tight 1.51 dB spread from the target and full sub-bass to 20 Hz.
Cons: The light plastic shell and basic cable reflect the price, and KZ’s published impedance and sensitivity figures vary between listings.
Full KZ EDX Pro X review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.51 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 78 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) |
| Tonal Tilt | -0.33 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
KZ EDX Pro: $17.99 Amazon $17.99 eBay
Older model: the KZ EDX (ranked higher, rated 3.8/5). See every KZ EDX generation.
Pros: It costs very little and is easy to drive, with 24 ohm impedance and a 112 dB sensitivity rating that suit a phone. Across 15 hobbyist measurements on squig.link bass sits about 4.6 dB above target and sub-bass about 3 dB above, which matches listeners who want heavy, thumping low end for pop, hip hop and EDM.
Cons: Crinacle’s measurement gives it a preference score of 58, well short of what most listeners prefer. Hobbyist measurements show a 7.7 dB spike near 11.9 kHz that can make cymbals sound splashy and hissy, and the bass boost can crowd vocals. The KZ ATE rates higher at the same price.
Full KZ EDX Pro review and specifications →
| Released | Sep 2021 (5 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.91 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 58 (measured by crinacle, via AutoEQ) |
| Impedance | 24 ohms |
| Sensitivity | 112 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.7 dB at 30 Hz) |
| Tonal Tilt | -1.10 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.3 dB | 0.70 |
| Peak | 169 Hz | -4.0 dB | 0.82 |
| Peak | 9,836 Hz | +2.9 dB | 0.18 |
| Peak | 783 Hz | +3.2 dB | 1.23 |
| Peak | 2,062 Hz | -4.8 dB | 2.53 |
| High shelf | 10,000 Hz | -6.1 dB | 0.70 |
| Peak | 9,508 Hz | +3.3 dB | 2.86 |
| Peak | 4,965 Hz | -5.7 dB | 5.27 |
| Peak | 3,516 Hz | +2.7 dB | 3.58 |
| Peak | 6,291 Hz | +3.2 dB | 5.44 |
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