Short answer: the EPZ G10. It ranks #16 of 1291 in-ear headphones by sound quality, rated 4.9/5, at $23.74; the 7Hz Salnotes Zero ranks #26, rated 4.8/5, at $22.99. The price gap is small enough that the sound-quality ranking should decide it.
What the EPZ G10 does well: Across 22 hobbyist measurements on squig.link, the G10 tracks the Harman target with only 1.11 dB of deviation and a preference score of 84.7, an exceptionally even result for a single dynamic driver at a budget price. The catch: The presence region around 3 to 6 kHz runs about 1.5 dB low, with a 3.6 dB dip near 6.3 kHz that slightly softens the edge of vocals and snare hits.
What the 7Hz Salnotes Zero does well: A Harman score of 84 from a single 10 mm dynamic driver at a bargain price is remarkable. The tradeoff: Presence and treble run about 2.1 to 2.2 dB under target, and a 6.2 dB dip near 10 kHz leaves cymbals and breath detail muted.
Buy the EPZ G10. It is rated higher for sound quality, and the $0.75 you would save on the 7Hz Salnotes Zero does not close the gap.
Looking for alternatives? See the complete Headphones rankings.
Across 22 hobbyist measurements on squig.link, the G10 tracks the Harman target with only 1.11 dB of deviation and a preference score of 84.7, an exceptionally even result for a single dynamic driver at a budget price.
Amazon $23.74 eBay
A Harman score of 84 from a single 10 mm dynamic driver at a bargain price is remarkable.
Amazon $22.99 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
| EPZ G10 | 7Hz Salnotes Zero | |
|---|---|---|
| Price | $23.74 | $22.99 |
| Ranked | #16 of 1291 in In-Ear Headphones | #26 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 85 (median of 22 squig.link measurements, calibrated to AutoEQ) | 84 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 1.11 dB standard deviation | 1.31 dB standard deviation |
| Tonal Tilt | +0.08 (negative is warmer, positive brighter) | -0.16 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.4 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 32 ohms | 32 ohms |
| Sensitivity | 100 dB | 108 dB SPL/V |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 10Hz - 20kHz (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 EPZ G10 from achoreviews, bassaudio, boizoff, cqtek, digaoreviews, elrics, fernandagunsan, gadgetrytech, harpo, hbb, hobbytalk, ianfann, iemworld, kuping-sensi, mmagtech, musicafe, practiphile, pw, regancipher, superreview, tonedeafmonk and vortexreviews; the 7Hz Salnotes Zero from achoreviews, aftersound, ankramutt, arn, audioamigo, bassaudio, bedrock, cammyfi, dentreviews, dvewlsh, eplv, flare, gadgetrytech, harpo, harutohiroki, hbb, hobbytalk, ianfann, iemocean, iemworld, jaytiss, lown-fi, lumerion, mmagtech, musicafe, nymz, precog, pw, sl0the, soundcheck39, superreview, tedthepraimortis, theaudiostore, therollo9, timmyv, treblewellxtended, vortexreviews and yoshiultra, all via squig.link.
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