Short answer: the KZ ZSN Pro 2. It ranks #230 of 450 in-ear headphones by sound quality, rated 4.1/5, at $18.99; the KZ ZSN Pro ranks #276, rated 3.9/5, and costs $24.99, so there is not much of a tradeoff to weigh.
The case for the KZ ZSN Pro: A preference score of 73 in HypetheSonics’ measurement is solid for a wired set this cheap, with a response that stays within about 2.2 dB of the Harman target. Watch for: Treble above 10 kHz runs about 6 dB hot, with a sharp 9.4 dB peak near 11 kHz that can make cymbals and hi-hats sound glassy or hissy.
Buy the KZ ZSN Pro 2. It is rated higher for sound quality than the KZ ZSN Pro and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| KZ ZSN Pro | KZ ZSN Pro 2 | |
|---|---|---|
| Price | $24.99 | $18.99 |
| Ranked | #276 of 450 in In-Ear Headphones | #230 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 73 (measured by HypetheSonics, via AutoEQ) | 75 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.23 dB standard deviation | 1.86 dB standard deviation |
| Tonal Tilt | -0.11 (negative is warmer, positive brighter) | -0.25 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.4 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature | 1 x dynamic + 1 x balanced armature |
| Impedance | 25 ohms | 26 ohms |
| Sensitivity | 104 dB/mW | 108 dB |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 20Hz - 40kHz (Manufacturer specified) |
| Back | Closed | Closed |
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- KZ ZSN Pro X vs KZ ZSN Pro
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- 7Hz x Crinacle Zero 2 vs CCA CRA
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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The Two Headphones In Full
KZ ZSN Pro: $24.99 Amazon eBay
Pros: A preference score of 73 in HypetheSonics’ measurement is solid for a wired set this cheap, with a response that stays within about 2.2 dB of the Harman target. Bass sits roughly 3 dB above target from 60 to 200 Hz, adding punch to kick drums and bass guitar without muddying the lower midrange, which stays within 1 dB. At 25 ohms and 104 dB/mW it runs loudly from a phone, and the hybrid dynamic plus balanced armature design suits v-shaped and warm tastes. It also rates higher than the MEE Audio M6 Pro.
Cons: Treble above 10 kHz runs about 6 dB hot, with a sharp 9.4 dB peak near 11 kHz that can make cymbals and hi-hats sound glassy or hissy. A 3.7 dB dip near 3.4 kHz pulls vocals and snare snap slightly back. Listeners who want a flat, neutral tuning will find the bass and treble both exaggerated.
Full KZ ZSN Pro review and specifications →
| Released | 2019 (7 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.23 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 73 (measured by HypetheSonics, via AutoEQ) |
| Impedance | 25 ohms |
| Sensitivity | 104 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.1 dB at 30 Hz) |
| Tonal Tilt | -0.11 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -4.2 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 | +0.5 dB | 0.70 |
| Peak | 750 Hz | +3.7 dB | 0.88 |
| Peak | 160 Hz | -3.1 dB | 0.79 |
| Peak | 3,264 Hz | +4.4 dB | 3.80 |
| Peak | 2,073 Hz | -3.5 dB | 2.04 |
| High shelf | 10,000 Hz | -5.0 dB | 0.70 |
| Peak | 4,840 Hz | -4.2 dB | 6.00 |
| Peak | 6,161 Hz | +3.4 dB | 4.50 |
| Peak | 3,841 Hz | +1.8 dB | 5.81 |
| Peak | 4,626 Hz | -1.0 dB | 5.62 |
- Reviews, Comparisons and Sound Samples
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KZ ZSN Pro 2: $18.99 Linsoul eBay
Full KZ ZSN Pro 2 review and specifications →
| Released | Jan 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.86 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 75 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 26 ohms |
| Sensitivity | 108 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.4 dB at 30 Hz) |
| Tonal Tilt | -0.25 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons