The KBEAR KB04 ranks #618 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: KBEAR
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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#618 KBEAR KB04: $29 eBay
Pros: A broadly balanced tuning with a preference score of 71 against the Harman target.
Cons: Treble about 4 dB above target from 3 to 10 kHz, which can sound sharp or tiring at higher volume. An uneven response, 2.2 dB standard deviation from target.
Is the KBEAR KB04 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 17 points.
Skip it if
- you are treble-sensitive (treble sits about 3.8 dB above target).
- you want the best value: the higher-rated EPZ G10 costs about $5 less.
| Back | Closed |
|---|---|
| Connection | Wired (3.5mm) |
| Deviation From Target | 2.19 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 Dynamic, 1 Balanced Armature |
| Form Factor | In-ear |
| Harman Preference Score | 71 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) |
| Tonal Tilt | +0.04 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -1.0 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 Harman match with this EQ: 88 out of 100, up from 71.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.1 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 27 Hz | +0.8 dB | 1.15 |
| Peak | 176 Hz | -5.3 dB | 0.79 |
| Peak | 868 Hz | +1.5 dB | 1.77 |
| Peak | 2,602 Hz | -2.9 dB | 4.47 |
| Peak | 3,950 Hz | +3.2 dB | 6.00 |
| Peak | 5,119 Hz | -1.7 dB | 6.00 |
| Peak | 8,000 Hz | -4.9 dB | 0.50 |
Neutral target
Set a preamp of -1.1 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 median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 90 out of 100, up from 40.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.7 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 167 Hz | -5.1 dB | 0.70 |
| Peak | 862 Hz | +1.6 dB | 1.72 |
| Peak | 2,603 Hz | -2.9 dB | 4.48 |
| Peak | 3,951 Hz | +3.2 dB | 6.00 |
| Peak | 5,119 Hz | -1.7 dB | 6.00 |
| Peak | 8,000 Hz | -4.9 dB | 0.50 |
Studio flat target
Set a preamp of -1.3 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 Studio flat match with this EQ: 89 out of 100, up from 23.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -12.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 170 Hz | -7.3 dB | 0.72 |
| Peak | 869 Hz | +1.5 dB | 1.91 |
| Peak | 3,745 Hz | +2.7 dB | 5.45 |
| Peak | 5,038 Hz | -1.9 dB | 6.00 |
| Peak | 5,932 Hz | -6.1 dB | 1.44 |
| Peak | 7,846 Hz | -3.0 dB | 6.00 |
Warm target
Set a preamp of -1.3 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 Warm match with this EQ: 90 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.9 dB | 0.70 |
| High shelf | 10,000 Hz | -3.8 dB | 0.70 |
| Peak | 173 Hz | -5.1 dB | 0.83 |
| Peak | 878 Hz | +1.9 dB | 1.69 |
| Peak | 2,606 Hz | -3.0 dB | 4.53 |
| Peak | 3,952 Hz | +3.1 dB | 6.00 |
| Peak | 5,120 Hz | -1.7 dB | 6.00 |
| Peak | 8,000 Hz | -7.1 dB | 0.44 |
Bass target
Set a preamp of -2.6 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: 90 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.7 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 27 Hz | +1.0 dB | 1.10 |
| Peak | 179 Hz | -5.3 dB | 0.81 |
| Peak | 869 Hz | +1.5 dB | 1.78 |
| Peak | 2,602 Hz | -2.9 dB | 4.46 |
| Peak | 3,950 Hz | +3.2 dB | 6.00 |
| Peak | 5,120 Hz | -1.7 dB | 6.00 |
| Peak | 8,000 Hz | -4.9 dB | 0.50 |
Bright 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 median of 5 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 92 out of 100, up from 35.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.7 dB | 0.70 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 169 Hz | -5.2 dB | 0.67 |
| Peak | 817 Hz | +1.5 dB | 2.15 |
| Peak | 2,560 Hz | -3.8 dB | 3.98 |
| Peak | 3,953 Hz | +2.8 dB | 5.47 |
| Peak | 5,166 Hz | -1.8 dB | 6.00 |
| Peak | 8,000 Hz | -3.8 dB | 2.96 |
V-shaped target
Set a preamp of -2.7 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: 90 out of 100, up from 75.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.3 dB | 0.70 |
| High shelf | 10,000 Hz | +1.6 dB | 0.70 |
| Peak | 173 Hz | -3.9 dB | 0.82 |
| Peak | 2,556 Hz | -3.2 dB | 4.48 |
| Peak | 3,940 Hz | +3.1 dB | 5.42 |
| Peak | 5,185 Hz | -1.6 dB | 6.00 |
| Peak | 7,820 Hz | -2.5 dB | 6.00 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the KBEAR KB04 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 bedrock, cqtek, musicafe, pw and recode. Thanks to each of them for publishing their work.