The Artpical Blue Planet ranks #684 out of 1084 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Prices on this page were last checked October 15, 2026 at 5:41 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.
As an eBay Partner, we may be compensated if you make a purchase.
#684 Artpical Blue Planet e-earphone (JP) eBay
Pros: A 12mm planar IEM with treble right on the Harman target and full sub-bass to 20 Hz, scoring 67 across four measurements.
Cons: A 2.45 dB spread from the target shows peaks and dips that better tuned sets avoid. It is sold mainly through Japanese retailers, and a low 98 dB sensitivity needs more volume.
Is the Artpical Blue Planet 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 20 points.
| Released | 2026 (this year) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.45 dB standard deviation |
| Driver Type | Planar Magnetic |
| Drivers | 1 x 12mm planar magnetic |
| Form Factor | In-ear |
| Harman Preference Score | 67 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 98 dB/mW @ 1kHz |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.3 dB at 30 Hz) |
| Tonal Tilt | -0.47 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.4 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 87 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.7 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 175 Hz | -3.7 dB | 0.86 |
| Peak | 3,775 Hz | +5.6 dB | 2.33 |
| Peak | 6,096 Hz | -2.8 dB | 6.00 |
| Peak | 7,123 Hz | -5.9 dB | 5.03 |
Neutral target
Set a preamp of -5.6 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 89 out of 100, up from 32.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.2 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 164 Hz | -3.6 dB | 0.72 |
| Peak | 743 Hz | +1.5 dB | 2.87 |
| Peak | 3,774 Hz | +5.6 dB | 2.32 |
| Peak | 4,652 Hz | +1.5 dB | 6.00 |
| Peak | 6,096 Hz | -2.8 dB | 6.00 |
| Peak | 7,123 Hz | -5.9 dB | 5.03 |
Studio flat target
Set a preamp of -6.3 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 84 out of 100, up from 13.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.9 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 167 Hz | -5.6 dB | 0.72 |
| Peak | 751 Hz | +1.4 dB | 3.09 |
| Peak | 1,451 Hz | -1.2 dB | 2.74 |
| Peak | 2,495 Hz | +1.6 dB | 6.00 |
| Peak | 3,153 Hz | +6.0 dB | 2.16 |
| Peak | 4,190 Hz | +2.8 dB | 4.62 |
| Peak | 5,849 Hz | -1.6 dB | 6.00 |
| Peak | 6,718 Hz | -6.1 dB | 3.37 |
Warm target
Set a preamp of -3.6 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 91 out of 100, up from 71.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.4 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 170 Hz | -3.5 dB | 0.89 |
| Peak | 752 Hz | +1.7 dB | 2.88 |
| Peak | 1,568 Hz | -1.7 dB | 2.63 |
| Peak | 3,805 Hz | +4.1 dB | 2.99 |
| Peak | 5,951 Hz | -2.5 dB | 6.00 |
| Peak | 7,099 Hz | -8.6 dB | 3.42 |
Bass target
Set a preamp of -5.4 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 88 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.1 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 178 Hz | -3.7 dB | 0.90 |
| Peak | 3,775 Hz | +5.6 dB | 2.33 |
| Peak | 6,095 Hz | -2.8 dB | 6.00 |
| Peak | 7,123 Hz | -5.9 dB | 5.03 |
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 median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 84 out of 100, up from 24.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.2 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 164 Hz | -3.6 dB | 0.71 |
| Peak | 2,954 Hz | +1.9 dB | 3.26 |
| Peak | 4,148 Hz | +6.0 dB | 1.70 |
| Peak | 6,945 Hz | -2.8 dB | 4.39 |
V-shaped 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 median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 83 out of 100, up from 71.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.8 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 166 Hz | -2.4 dB | 0.98 |
| Peak | 1,435 Hz | -1.8 dB | 2.88 |
| Peak | 2,954 Hz | +1.9 dB | 3.49 |
| Peak | 4,148 Hz | +6.0 dB | 1.38 |
| Peak | 6,734 Hz | -2.0 dB | 4.90 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the Artpical Blue Planet 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 4 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 4 measurements from the squig.link databases of aftersound, dchpgall, hu-fi and soundignity. Thanks to each of them for publishing their work.