The Zuo Drum String Phanta ranks #1001 out of 1369 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Prices on this page were last checked October 17, 2026 at 6:04 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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#1001 Zuo Drum String Phanta: $189.00 AliExpress $189.00 eBay
Pros: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Cons: An uneven response, 2.8 dB standard deviation from target.
Is the Zuo Drum String Phanta 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.
Skip it if
- you want the best value: the higher-rated EPZ G10 costs about $165 less.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.75 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 3 x dynamic drivers (1 x 10mm graphene full-range + 2 x 8mm coaxial dual dynamic bass) |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz |
| Harman Preference Score | 64 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 11 ohms |
| Sensitivity | 101 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) |
| Tonal Tilt | -0.58 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.8 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 84 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.5 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 217 Hz | -4.0 dB | 0.73 |
| Peak | 2,061 Hz | +2.4 dB | 2.42 |
| Peak | 3,481 Hz | -1.6 dB | 6.00 |
| Peak | 5,364 Hz | +6.0 dB | 2.65 |
| Peak | 8,000 Hz | -3.4 dB | 6.00 |
Neutral target
Set a preamp of -5.8 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 86 out of 100, up from 30.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.0 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 205 Hz | -3.9 dB | 0.63 |
| Peak | 2,054 Hz | +2.4 dB | 2.36 |
| Peak | 3,481 Hz | -1.6 dB | 6.00 |
| Peak | 5,363 Hz | +6.0 dB | 2.65 |
| Peak | 8,000 Hz | -3.4 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 the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 86 out of 100, up from 13.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.6 dB | 0.70 |
| Peak | 195 Hz | -5.8 dB | 0.65 |
| Peak | 431 Hz | -0.9 dB | 2.21 |
| Peak | 2,298 Hz | +2.9 dB | 4.00 |
| Peak | 3,704 Hz | -2.9 dB | 6.00 |
| Peak | 5,016 Hz | +2.9 dB | 0.40 |
| Peak | 7,736 Hz | -4.3 dB | 6.00 |
Warm target
Set a preamp of -4.4 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 84 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.3 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 215 Hz | -3.8 dB | 0.76 |
| Peak | 2,005 Hz | +1.6 dB | 2.18 |
| Peak | 3,486 Hz | -2.4 dB | 6.00 |
| Peak | 5,476 Hz | +5.4 dB | 4.69 |
| Peak | 8,000 Hz | -5.5 dB | 6.00 |
Bass target
Set a preamp of -5.8 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 86 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.3 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 43 Hz | +0.9 dB | 1.79 |
| Peak | 221 Hz | -4.0 dB | 0.76 |
| Peak | 2,063 Hz | +2.4 dB | 2.44 |
| Peak | 3,481 Hz | -1.6 dB | 6.00 |
| Peak | 5,364 Hz | +6.0 dB | 2.66 |
| Peak | 8,000 Hz | -3.4 dB | 6.00 |
Bright 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 median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 84 out of 100, up from 21.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.1 dB | 0.70 |
| Peak | 208 Hz | -3.9 dB | 0.63 |
| Peak | 2,077 Hz | +2.4 dB | 2.56 |
| Peak | 5,080 Hz | +6.0 dB | 1.64 |
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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 84 out of 100, up from 63.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.9 dB | 0.70 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 234 Hz | -2.6 dB | 0.73 |
| Peak | 2,123 Hz | +2.7 dB | 3.17 |
| Peak | 4,936 Hz | +5.8 dB | 1.30 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the Zuo Drum String Phanta 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 3 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 3 measurements from the squig.link databases of aftersound, practiphile and tonedeafmonk. Thanks to each of them for publishing their work.