The KZ ZSN ranks #888 out of 1291 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: KZ
Prices 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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#888 KZ ZSN: $19.99 Discontinued KZ Audio $19.99 eBay
Newer model: the KZ ZSN Pro 2, ranked higher, rated 4.1/5, released Jan 2024. See every KZ ZSN Pro generation.
Pros: A broadly balanced tuning with a preference score of 66 against the Harman target. Succeeded by the KZ ZSN Pro.
Cons: An uneven response, 2.6 dB standard deviation from target. Discontinued.
Is the KZ ZSN right for you?
Buy it if
- you want sub-bass rumble that reaches down to 20 Hz.
- you are happy to use EQ: our preset lifts its Harman match by about 16 points.
Skip it if
- you want to buy it new: it is discontinued.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.62 dB standard deviation |
| Driver Type | Hybrid (1 DD + 1 BA) |
| Drivers | 1 x 10mm dynamic driver (titanium film) + 1 x 30095 balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz |
| Harman Preference Score | 66 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 25 ohms |
| Sensitivity | 104 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.0 dB at 30 Hz) |
| Tonal Tilt | -0.29 (negative is warmer, positive brighter) |
| Weight | 0.1 lbs (23g) |
EQ Presets
Harman target
Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 82 out of 100, up from 66.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.4 dB | 0.70 |
| High shelf | 10,000 Hz | -4.4 dB | 0.70 |
| Peak | 172 Hz | -5.5 dB | 0.74 |
| Peak | 2,309 Hz | -2.2 dB | 4.12 |
| Peak | 3,654 Hz | -2.3 dB | 1.38 |
| Peak | 5,828 Hz | +6.0 dB | 5.66 |
Neutral target
Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 84 out of 100, up from 35.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.9 dB | 0.70 |
| High shelf | 10,000 Hz | -4.4 dB | 0.70 |
| Peak | 164 Hz | -5.4 dB | 0.66 |
| Peak | 2,311 Hz | -2.2 dB | 4.15 |
| Peak | 3,654 Hz | -2.3 dB | 1.40 |
| Peak | 5,828 Hz | +6.0 dB | 5.66 |
Studio flat target
Set a preamp of -4.5 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 87 out of 100, up from 19.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.9 dB | 0.70 |
| High shelf | 10,000 Hz | +1.1 dB | 0.70 |
| Peak | 170 Hz | -7.4 dB | 0.71 |
| Peak | 4,191 Hz | -4.4 dB | 6.00 |
| Peak | 5,881 Hz | +4.8 dB | 6.00 |
Warm target
Set a preamp of -3.5 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 83 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.1 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 167 Hz | -5.3 dB | 0.76 |
| Peak | 2,297 Hz | -2.9 dB | 3.40 |
| Peak | 3,654 Hz | -4.0 dB | 1.60 |
| Peak | 5,833 Hz | +6.0 dB | 5.95 |
| Peak | 8,000 Hz | -4.5 dB | 6.00 |
Bass target
Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 83 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.4 dB | 0.70 |
| High shelf | 10,000 Hz | -4.4 dB | 0.70 |
| Peak | 175 Hz | -5.5 dB | 0.76 |
| Peak | 2,308 Hz | -2.2 dB | 4.11 |
| Peak | 3,654 Hz | -2.3 dB | 1.38 |
| Peak | 5,828 Hz | +6.0 dB | 5.67 |
Bright target
Set a preamp of -5.9 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 84 out of 100, up from 26.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.9 dB | 0.70 |
| High shelf | 10,000 Hz | -0.8 dB | 0.70 |
| Peak | 164 Hz | -5.4 dB | 0.66 |
| Peak | 2,397 Hz | -2.8 dB | 2.77 |
| Peak | 5,599 Hz | +6.0 dB | 3.67 |
V-shaped target
Set a preamp of -6.0 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 84 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.1 dB | 0.70 |
| Peak | 164 Hz | -4.1 dB | 0.77 |
| Peak | 2,347 Hz | -2.2 dB | 2.91 |
| Peak | 5,550 Hz | +6.0 dB | 3.32 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the KZ ZSN measures across the audible range, against the Harman in-ear target that most listeners prefer in blind tests. Where the line sits above the target that range sounds louder (more bass, brighter treble), below it quieter. The curve is the median of 5 independent measurements, so one odd sample or rig cannot skew it, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: median of 5 measurements from the squig.link databases of achoreviews, eplv, isaiahse, melatonin and pw. Thanks to each of them for publishing their work.