The Astrotec GX100 ranks #859 out of 1291 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
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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#859 Astrotec GX100: $49.90 Astrotec $49.90 eBay
Pros: A broadly balanced tuning with a preference score of 67 against the Harman target.
Cons: Treble about 2 dB above target from 3 to 10 kHz, which can sound sharp or tiring at higher volume. An uneven response, 2.4 dB standard deviation from target.
Is the Astrotec GX100 right for you?
Buy it if
- you are happy to use EQ: our preset lifts its Harman match by about 20 points.
Skip it if
- you are treble-sensitive (treble sits about 2.2 dB above target).
- you want the best value: the higher-rated EPZ G10 costs about $26 less.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.39 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 DD + 1 PZT (1 x 10mm LCP dynamic driver + 1 x 10.6mm piezoelectric ceramic driver) |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 40kHz |
| Harman Preference Score | 67 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 108 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.3 dB at 30 Hz) |
| Tonal Tilt | +0.98 (negative is warmer, positive brighter) |
EQ Presets
Harman 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 Harman match with this EQ: 87 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.6 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 174 Hz | -2.5 dB | 0.77 |
| Peak | 2,500 Hz | -2.7 dB | 3.37 |
| Peak | 5,289 Hz | -4.9 dB | 2.23 |
Neutral target
Set a preamp of -1.5 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 88 out of 100, up from 69.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -5.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 174 Hz | -2.5 dB | 0.70 |
| Peak | 2,501 Hz | -2.7 dB | 3.37 |
| Peak | 5,288 Hz | -4.9 dB | 2.25 |
Studio flat 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 94 out of 100, up from 53.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.5 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 168 Hz | -4.4 dB | 0.74 |
| Peak | 739 Hz | +1.3 dB | 2.83 |
| Peak | 3,433 Hz | +1.4 dB | 4.87 |
| Peak | 5,297 Hz | -7.5 dB | 3.62 |
| Peak | 7,695 Hz | -1.4 dB | 6.00 |
Warm 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 the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 92 out of 100, up from 57.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.8 dB | 0.70 |
| High shelf | 10,000 Hz | -0.7 dB | 0.70 |
| Peak | 23 Hz | +1.4 dB | 1.65 |
| Peak | 174 Hz | -2.2 dB | 0.86 |
| Peak | 741 Hz | +1.8 dB | 2.04 |
| Peak | 2,522 Hz | -1.8 dB | 4.29 |
| Peak | 3,915 Hz | +2.4 dB | 5.25 |
| Peak | 5,237 Hz | -2.2 dB | 6.00 |
| Peak | 5,899 Hz | -5.1 dB | 0.55 |
Bass 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 Bass match with this EQ: 86 out of 100, up from 49.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.8 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 53 Hz | +0.9 dB | 2.27 |
| Peak | 198 Hz | -2.3 dB | 1.14 |
| Peak | 737 Hz | +1.3 dB | 2.90 |
| Peak | 2,500 Hz | -2.7 dB | 3.37 |
| Peak | 4,019 Hz | +1.7 dB | 4.89 |
| Peak | 5,289 Hz | -4.9 dB | 2.22 |
| Peak | 7,976 Hz | -2.0 dB | 6.00 |
Bright target
Set a preamp of -2.2 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: 93 out of 100, up from 63.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -5.0 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 23 Hz | +0.9 dB | 1.58 |
| Peak | 78 Hz | -1.0 dB | 2.35 |
| Peak | 174 Hz | -2.6 dB | 0.66 |
| Peak | 696 Hz | +1.4 dB | 2.24 |
| Peak | 2,476 Hz | -2.5 dB | 4.11 |
| Peak | 3,899 Hz | +1.9 dB | 5.62 |
| Peak | 5,180 Hz | -2.3 dB | 6.00 |
| Peak | 6,666 Hz | +2.0 dB | 3.94 |
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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 81 out of 100, up from 55.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.9 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the Astrotec GX100 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 audioamigo, pw, soundcheck39 and tonedeafmonk. Thanks to each of them for publishing their work.
Head-to-Head Comparisons
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