Short answer: a tie on sound quality. Both are rated 4.0/5 (#427 and #408 of 1291 in-ear headphones) at nearly the same price ($16.99 vs $19.99), so choose on features and fit.
Why pick the KZ EDA Balanced: A 7 single dynamic IEM that measures well (score 74 across seven measurements), with bass on target down to 20 Hz. The catch: The listing sells three tunings (Balanced, Bass and Hi-Res), so pick the silver Balanced version this rating covers.
What the KZ ZVX does well: The median of 17 hobbyist measurements gives it a solid Harman preference score of 74 with a 1.82 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. Watch for: A 5.7 dB peak near 8.2 kHz can make cymbals and sibilance sound sharp.
Buy the KZ EDA Balanced or the KZ ZVX on features: they are rated the same for sound quality at close to the same price.
Want more options? Browse the full Headphones rankings.
A 7 single dynamic IEM that measures well (score 74 across seven measurements), with bass on target down to 20 Hz.
Amazon $16.99 eBay
The median of 17 hobbyist measurements gives it a solid Harman preference score of 74 with a 1.82 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
Linsoul $19.99 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 EDA Balanced | KZ ZVX | |
|---|---|---|
| Price | $16.99 | $19.99 |
| Ranked | #427 of 1291 in In-Ear Headphones | #408 of 1291 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 | 74 (median of 7 squig.link measurements, calibrated to AutoEQ) | 74 (median of 17 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.82 dB standard deviation | 1.82 dB standard deviation |
| Tonal Tilt | -0.57 (negative is warmer, positive brighter) | -0.56 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.5 dB at 30 Hz) |
| Impedance | - | 25 ohms |
| Sensitivity | - | 109 dB |
| Frequency Response | - | 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 KZ EDA Balanced from ekaudio, hbb, hore, melatonin, practiphile, soundcheck39 and vortexreviews; the KZ ZVX from achoreviews, adri-n, aftersound, ankramutt, bukanaudiophile, fahryst, harpo, hbb, hore, ianfann, musicafe, practiphile, pw, soundcheck39, tdl, timmyv and tonedeafmonk, all via squig.link.
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