The KZ Vibe X ranks #513 out of 1476 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 20, 2026 at 10:35 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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#513 KZ Vibe X: $49.99 Amazon $49.99 eBay
Pros: A budget IEM at about $50 that adds a 13 mm vibration driver to a 10 mm dynamic for tactile bass, with a preference score of 74 across two measurements. The midrange stays within about 1 dB of target.
Cons: Treble is 3.2 dB low from 5 to 8 kHz with a 4.5 dB dip near 5.9 kHz, so it sounds a little soft on top, and sub bass is 2.4 dB light despite the bass driver. Upper bass is 2.5 dB up, which adds some warmth over clarity.
Is the KZ Vibe X right for you?
Buy it if
- you are sensitive to bright or sharp treble (treble sits 2.5 dB below target).
- 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 15 points.
Skip it if
- you want the best value: the higher-rated QCY HT05 MeloBuds ANC costs about $16 less.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.16 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 13mm vibration driver |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 74 (average of 2 squig.link measurements scored separately, calibrated to AutoEQ) |
| Impedance | 20 ohms |
| Sensitivity | 107 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.1 dB at 30 Hz) |
| Tonal Tilt | -0.21 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -4.1 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 89 out of 100, up from 74.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.8 dB | 0.70 |
| Peak | 63 Hz | +2.0 dB | 2.82 |
| Peak | 91 Hz | -3.0 dB | 0.72 |
| Peak | 198 Hz | -2.0 dB | 1.26 |
| Peak | 1,812 Hz | -1.5 dB | 2.50 |
| Peak | 3,429 Hz | +1.8 dB | 5.51 |
| Peak | 5,345 Hz | +4.0 dB | 1.24 |
Neutral target
Set a preamp of -4.1 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 91 out of 100, up from 45.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -6.7 dB | 0.70 |
| Peak | 63 Hz | +1.9 dB | 3.06 |
| Peak | 91 Hz | -3.2 dB | 0.64 |
| Peak | 198 Hz | -1.7 dB | 1.29 |
| Peak | 1,817 Hz | -1.5 dB | 2.52 |
| Peak | 3,429 Hz | +1.8 dB | 5.58 |
| Peak | 5,345 Hz | +4.0 dB | 1.21 |
Studio flat 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 93 out of 100, up from 27.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.3 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 69 Hz | +1.5 dB | 6.00 |
| Peak | 150 Hz | -5.6 dB | 0.80 |
| Peak | 720 Hz | +1.0 dB | 2.84 |
| Peak | 1,642 Hz | -1.3 dB | 3.03 |
| Peak | 3,523 Hz | +4.2 dB | 1.24 |
| Peak | 6,000 Hz | +1.6 dB | 5.78 |
Warm target
Set a preamp of -2.1 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 86 out of 100, up from 77.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.0 dB | 0.70 |
| High shelf | 10,000 Hz | -2.8 dB | 0.70 |
| Peak | 63 Hz | +1.9 dB | 2.87 |
| Peak | 91 Hz | -2.9 dB | 0.82 |
| Peak | 5,345 Hz | +2.1 dB | 2.20 |
Bass target
Set a preamp of -6.2 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 66.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.4 dB | 0.70 |
| Peak | 36 Hz | +1.4 dB | 1.49 |
| Peak | 63 Hz | +2.2 dB | 2.70 |
| Peak | 91 Hz | -2.7 dB | 0.75 |
| Peak | 198 Hz | -2.1 dB | 1.24 |
| Peak | 1,811 Hz | -1.5 dB | 2.49 |
| Peak | 3,429 Hz | +1.8 dB | 5.52 |
| Peak | 5,345 Hz | +4.0 dB | 1.24 |
Bright target
Set a preamp of -6.2 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 84 out of 100, up from 33.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -6.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 63 Hz | +2.0 dB | 3.00 |
| Peak | 91 Hz | -3.2 dB | 0.62 |
| Peak | 4,678 Hz | +6.0 dB | 1.37 |
V-shaped target
Set a preamp of -6.1 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 81 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 70 Hz | +2.2 dB | 6.00 |
| Peak | 91 Hz | -2.4 dB | 1.54 |
| Peak | 4,524 Hz | +6.0 dB | 1.24 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the KZ Vibe X 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 average of 2 independent measurements, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: the average of 2 independent measurements from the squig.link databases of practiphile and vortexreviews. Thanks to each of them for publishing their work.