Short answer: a tie on sound quality, though neither ranks well in its class. Both are rated 2.7/5 (#1057 and #1062 of 1291 in-ear headphones) at nearly the same price ($17.99 vs $20.99), so choose on features and fit. Both are rated below 3.0/5 among the 1291 in-ear headphones, and the EPZ G10, ranked #16 at $23.74, is a better place to start if sound quality matters.
Why pick 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. The catch: Crinacle’s measurement gives it a preference score of 58, well short of what most listeners prefer.
What the ND Planet does well: Bass is lifted about 3 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. Watch for: Presence sits about 3.9 dB low with a 13 dB dip near 11.9 kHz, so vocals and instruments lose some bite.
Buy the KZ EDX Pro or the ND Planet on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
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 3 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
Amazon $20.99 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 | ND Planet | |
|---|---|---|
| Price | $17.99 | $20.99 |
| Ranked | #1057 of 1291 in In-Ear Headphones | #1062 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 58 (measured by crinacle, via AutoEQ) | 58 (median of 12 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.91 dB standard deviation | 2.85 dB standard deviation |
| Tonal Tilt | -1.10 (negative is warmer, positive brighter) | -1.23 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 12mm dynamic |
| Impedance | 24 ohms | 32 ohms |
| Sensitivity | 112 dB | - |
| Frequency Response | 10Hz - 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 (+1.7 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 ND Planet from aftersound, audioamigo, doltonius, ducbloke, eplv, hbb, jaytiss, practiphile, pw, sl0the, soundcheck39, tdl, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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