The KBEAR Kalideer Apex-P6 ranks #265 out of 1448 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 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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#265 KBEAR Kalideer Apex-P6: $109.00 Amazon $109.00 eBay
Pros: A tribrid with a beryllium-plated dynamic driver, a balanced armature and a piezo driver, whose sub bass through presence stays within about 1 dB of target apart from the upper bass. Sub bass reaches fully to 20 Hz.
Cons: Upper bass is about 2.4 dB high and the 5 to 8 kHz range is about 3.9 dB low with a 5.9 dB dip near 6.5 kHz, so it sounds warm and less detailed. The EPZ Q5 Pro rates higher for less, and the score rests on a single measurement.
Is the KBEAR Kalideer Apex-P6 right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 77).
- your taste runs warm: it scores 85 for that sound.
- you are sensitive to bright or sharp treble (treble sits 2.0 dB below target).
- you want sub-bass rumble that reaches down to 20 Hz.
Skip it if
- you want the best value: the higher-rated QCY HT05 MeloBuds ANC costs about $75 less.
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.72 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature + 1 piezoelectric) |
| Drivers | 1 x 10mm beryllium-plated dynamic + 1 x balanced armature (30095) + 1 x 10mm piezoelectric |
| Form Factor | In-ear |
| Harman Preference Score | 77 (1 squig.link measurement, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 102 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) |
| Tonal Tilt | -0.48 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 91 out of 100, up from 77.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 174 Hz | -2.8 dB | 0.87 |
| Peak | 2,887 Hz | +2.2 dB | 3.65 |
| Peak | 4,401 Hz | -1.7 dB | 6.00 |
| Peak | 5,905 Hz | +5.1 dB | 4.91 |
Neutral target
Set a preamp of -5.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 93 out of 100, up from 41.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.4 dB | 0.70 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 174 Hz | -2.8 dB | 0.71 |
| Peak | 703 Hz | +1.0 dB | 2.21 |
| Peak | 1,512 Hz | -0.8 dB | 3.30 |
| Peak | 2,883 Hz | +2.2 dB | 3.60 |
| Peak | 4,401 Hz | -1.7 dB | 6.00 |
| Peak | 5,905 Hz | +5.1 dB | 4.90 |
| Peak | 7,646 Hz | +1.3 dB | 6.00 |
Studio flat target
Set a preamp of -4.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 90 out of 100, up from 20.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.0 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 173 Hz | -4.6 dB | 0.77 |
| Peak | 2,740 Hz | +4.7 dB | 2.52 |
| Peak | 4,440 Hz | -2.9 dB | 6.00 |
| Peak | 6,049 Hz | +3.4 dB | 6.00 |
| Peak | 8,000 Hz | +1.4 dB | 3.04 |
Warm 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 Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 94 out of 100, up from 85.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.3 dB | 0.70 |
| High shelf | 10,000 Hz | -2.6 dB | 0.70 |
| Peak | 174 Hz | -2.6 dB | 0.90 |
| Peak | 705 Hz | +1.2 dB | 2.39 |
| Peak | 1,623 Hz | -1.2 dB | 3.63 |
| Peak | 2,901 Hz | +1.0 dB | 4.24 |
| Peak | 4,369 Hz | -3.3 dB | 5.44 |
| Peak | 6,181 Hz | +3.3 dB | 6.00 |
Bass target
Set a preamp of -5.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 74.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.9 dB | 0.70 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 175 Hz | -2.8 dB | 0.89 |
| Peak | 2,887 Hz | +2.2 dB | 3.66 |
| Peak | 4,401 Hz | -1.7 dB | 6.00 |
| Peak | 5,905 Hz | +5.1 dB | 4.91 |
Bright 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 Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 83 out of 100, up from 28.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.5 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 174 Hz | -2.8 dB | 0.70 |
| Peak | 2,888 Hz | +1.8 dB | 4.79 |
| Peak | 5,288 Hz | +4.0 dB | 1.06 |
V-shaped target
Set a preamp of -5.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 78 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.6 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 174 Hz | -1.5 dB | 0.97 |
| Peak | 1,425 Hz | -1.3 dB | 2.54 |
| Peak | 2,836 Hz | +1.6 dB | 5.80 |
| Peak | 4,892 Hz | +4.0 dB | 0.83 |
| Peak | 5,634 Hz | +1.9 dB | 6.00 |
| Peak | 7,925 Hz | -0.9 dB | 0.80 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the KBEAR Kalideer Apex-P6 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 a single measurement, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: a single measurement from the squig.link database of tonedeafmonk. Thanks to them for publishing their work.