Short answer: a tie on sound quality. Both are rated 4.1/5 (#329 and #356 of 1291 in-ear headphones) at nearly the same price ($32.99 vs $34.99), so choose on features and fit.
What the KZ Axas does well: The median of 3 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.66 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural. The catch: An 8.2 dB peak near 11.9 kHz can make cymbals and sibilance sound sharp.
What the KZ Vader Balanced does well: The Balanced factory tuning of the triple dynamic KZ Vader, very cheap at about $35, with about 1.5 dB more bass than target and four tuning switches (score 75). The tradeoff: It rates below the KZ Vader, which has less bass, and the same listing sells both tunings, so check which one you order.
Buy the KZ Axas or the KZ Vader Balanced on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete Headphones rankings.
The median of 3 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.66 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural.
Amazon $32.99 eBay
The Balanced factory tuning of the triple dynamic KZ Vader, very cheap at about $35, with about 1.5 dB more bass than target and four tuning switches (score 75).
Linsoul $34.99 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 Axas | KZ Vader Balanced | |
|---|---|---|
| Price | $32.99 | $34.99 |
| Ranked | #329 of 1291 in In-Ear Headphones | #356 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 75 (median of 3 squig.link measurements, calibrated to AutoEQ) | 75 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.66 dB standard deviation | 1.97 dB standard deviation |
| Tonal Tilt | -0.66 (negative is warmer, positive brighter) | -0.18 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x dynamic | 3 x 8mm dynamic |
| Impedance | 20 ohms | - |
| Sensitivity | 107 dB/mW | - |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 20Hz - 40kHz |
| Built-in Microphone | Yes | - |
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 Axas from ankramutt, digaoreviews and tdl; the KZ Vader Balanced from audioamigo, harpo and koi, all via squig.link.
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