The EPZ K9 ranks #33 out of 297 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: EPZ
Prices on this page were last checked October 10, 2026 at 5:37 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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#33 EPZ K9: $349.99 Amazon eBay
Pros: In the median of 19 hobbyist measurements on squig.link, the K9 earns a preference score of 82 with a low 1.26 dB deviation, so its eight balanced armatures and dynamic woofer blend into a cohesive, gently warm tuning. Sub-bass is within half a decibel of target and bass about 1.9 dB above it, giving a full low end without boom. The 14 ohm, 108 dB sensitivity rating means it plays loud from a phone.
Cons: Air above 10 kHz runs about 3.4 dB above target and a 4 dB peak sits near 8.1 kHz, which can add a slightly bright edge to cymbals. It is rated below the similarly priced AKG N5005 and IOAudio Sogno, which makes it a harder sell at this price. The very low 14 ohm impedance can make the tuning shift on sources with high output impedance.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.25 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 8 balanced armature) |
| Drivers | 1 x dynamic + 8 x balanced armature |
| Form Factor | In-ear |
| Harman Preference Score | 82 (median of 20 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 14 ohms |
| Sensitivity | 108 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.2 dB at 30 Hz) |
| Tonal Tilt | -0.15 (negative is warmer, positive brighter) |
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