The 7Hz Salnotes Zero 2 ranks #360 out of 467 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: 7Hz
Prices on this page were last checked October 11, 2026 at 4:59 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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#360 7Hz Salnotes Zero 2: $24.99 Amazon $24.99 eBay
Pros: Bass and sub-bass both run 1.5 to 1.8 dB above target in hobbyist measurements, giving a warm, full low end that suits listeners who like some extra weight. The 32 ohm load is easy for a phone or laptop to drive. It earns a higher rating than the CCA CSN at a similar price.
Cons: Presence falls about 4 dB below target with a 5.9 dB dip near 6 kHz, so vocals and cymbals sound recessed and a bit dull. A preference score of 69 means the tonality is noticeably colored. The KZ ZST rates slightly higher for less money, and there is no microphone.
| Released | 2023 (3 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.11 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 69 (median of 15 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 108 dB/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.2 dB at 30 Hz) |
| Tonal Tilt | -0.87 (negative is warmer, positive brighter) |
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