Short answer: a tie on sound quality. Both are rated 3.7/5 (#645 and #682 of 1291 in-ear headphones) at nearly the same price ($71.99 vs $69.90), so choose on features and fit.
The case for the KZ PRX: The median of 14 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.10 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural. The catch: A 6.1 dB peak near 8.4 kHz can make cymbals and sibilance sound sharp.
The case for the Sivga Que: The beryllium plated dynamic driver gives full bass about 2.7 dB above target, and the upper mids sit right on target across 24 measurements, so vocals sound clear and natural. The catch: Sub-bass rolls off about 2.5 dB at 30 Hz, a 5.9 dB dip near 6.3 kHz takes some detail out, and a 5 dB peak near 11 kHz can add a little sharpness.
Buy the KZ PRX or the Sivga Que 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.
The median of 14 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.10 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural.
Amazon $71.99 eBay
The beryllium plated dynamic driver gives full bass about 2.7 dB above target, and the upper mids sit right on target across 24 measurements, so vocals sound clear and natural.
Amazon $69.90 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 PRX | Sivga Que | |
|---|---|---|
| Price | $71.99 | $69.90 |
| Ranked | #645 of 1291 in In-Ear Headphones | #682 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Planar | Dynamic |
| Drivers | 1 x planar magnetic | 1 x 10mm dynamic (beryllium-plated diaphragm) |
| Impedance | 15 ohms | 32 ohms |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 70 (median of 14 squig.link measurements, calibrated to AutoEQ) | 69 (median of 24 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.10 dB standard deviation | 2.44 dB standard deviation |
| Tonal Tilt | -0.66 (negative is warmer, positive brighter) | -0.28 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.5 dB at 30 Hz) |
| Sensitivity | - | 108 dB/mW |
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 PRX from aftersound, audioamigo, breampike, enemyspider, eplv, jaytiss, lown-fi, obodio, pw, sl0the, soundcheck39, soundignity, treblewellxtended and vortexreviews; the Sivga Que from aftersound, atechreviews, audioamigo, boizoff, ducbloke, elrics, enemyspider, eplv, gadgetgenerations, iemworld, jaytiss, joycesreview, lumerion, practiphile, pw, silicagel, sl0the, soundcheck39, soundignity, superreview, suporsalad, tonedeafmonk, treblewellxtended and vortexreviews, all via squig.link.
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