Coverage note. Speaker Ranking currently covers 2 7Hz models across headphones. These are the products in our database, not a complete list of everything 7Hz makes.
What this page covers. The 7Hz models ranked here span headphones, including 7Hz Salnotes Zero and 7Hz x Crinacle Zero 2. Use each model’s category position to compare it with alternatives of the same size and use case.
This page lists all 2 7Hz speakers ranked on this site across headphones. Each model is shown in the category where it competes, with its current rank and the size of that ranking.
Use the category position rather than the brand name alone: speakers from the same manufacturer can perform very differently by size, price and product family.
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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In-Ear Headphones
Ranked #22 of 68 in In-Ear Headphones - 7Hz x Crinacle Zero 2: $24.99 Amazon eBay
Older model: the 7Hz Salnotes Zero (ranked higher, rated 4.8/5). See every 7Hz Zero generation.
Pros: Crinacle’s measurement gives a preference score of 73 with a response that stays fairly even, a standard deviation of 1.99 dB around target. A 10mm dynamic driver at 32 ohms and 108 dB SPL/V sensitivity runs from a phone with no amp. The low cost makes it an easy entry into wired in-ears.
Cons: The tilt of negative 0.71 is the warmest in this group, so treble detail and air can sound subdued. It has no wireless features, noise cancelling or listed microphone. The KZ ZSN Pro X has a higher rating at a similar price.
Full 7Hz x Crinacle Zero 2 review and specifications →
| Released | Nov 2023 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.99 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 73 (measured by crinacle, via AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 108 dB SPL/V |
| Tonal Tilt | -0.71 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -4.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.1 dB | 0.70 |
| Peak | 6,290 Hz | +4.3 dB | 0.72 |
| Peak | 182 Hz | -2.3 dB | 1.03 |
| Peak | 1,916 Hz | -1.7 dB | 0.50 |
| Peak | 855 Hz | +1.8 dB | 1.59 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 67 Hz | +0.4 dB | 2.53 |
| Peak | 7,224 Hz | -1.2 dB | 5.84 |
| Peak | 5,811 Hz | +0.8 dB | 5.07 |
| Peak | 3,871 Hz | -0.3 dB | 2.41 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Discontinued 7Hz Models
Still ranked, and often still worth buying used, but no longer in production. Check availability before planning around one of these.
In-Ear Headphones
Ranked #4 of 68 in In-Ear Headphones - 7Hz Salnotes Zero: $22.99 Discontinued Amazon eBay
Newer model: the 7Hz x Crinacle Zero 2, ranked lower, rated 3.9/5, released Nov 2023. See every 7Hz Zero generation.
Pros: A Harman score of 84 from a single 10 mm dynamic driver at a bargain price is remarkable. Bass and mids sit within about 0.3 dB of the target, so vocals and instruments are balanced naturally with a 1.31 dB deviation. It runs from a phone without difficulty at 32 ohms and 108 dB per volt. It beats the 7Hz x Crinacle Zero 2 on rating at a similar cost.
Cons: 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. Sub-bass is about 1.5 dB light, so the deepest rumble in electronic music is understated. The sensitivity is lower than many rivals, so it needs a bit more volume headroom from weak sources. Discontinued.
Full 7Hz Salnotes Zero review and specifications →
| Released | Jul 2022 (4 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.31 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 84 (measured by oratory1990, via AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 108 dB SPL/V |
| Tonal Tilt | -0.16 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -2.5 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.4 dB | 0.70 |
| Peak | 7,148 Hz | +2.5 dB | 1.39 |
| Peak | 186 Hz | -1.3 dB | 1.35 |
| Peak | 65 Hz | +1.7 dB | 1.11 |
| Peak | 1,677 Hz | -1.1 dB | 1.82 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 857 Hz | +0.9 dB | 1.64 |
| Peak | 9,824 Hz | +0.9 dB | 1.98 |
| Peak | 3,316 Hz | -0.6 dB | 2.50 |
| Peak | 1,261 Hz | -0.7 dB | 3.34 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Product Line History
How these product lines changed from one generation to the next.