The TANCHJIM ZERO DSP ranks #191 out of 1118 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Tanchjim
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#191 TANCHJIM ZERO DSP: $20 eBay
Pros: A broadly balanced tuning with a preference score of 78 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.
Is the TANCHJIM ZERO DSP right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 78).
- you want sub-bass rumble that reaches down to 20 Hz.
Skip it if
- you are treble-sensitive (treble sits about 2.3 dB above target).
| Back | Closed |
|---|---|
| Connection | USB-C |
| Deviation From Target | 1.49 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 78 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 118 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) |
| Tonal Tilt | +0.09 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -1.9 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: 90 out of 100, up from 78.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.2 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 23 Hz | +2.4 dB | 2.37 |
| Peak | 96 Hz | -2.6 dB | 1.10 |
| Peak | 479 Hz | +0.8 dB | 1.86 |
| Peak | 1,252 Hz | +2.5 dB | 5.57 |
| Peak | 2,020 Hz | -1.1 dB | 2.57 |
| Peak | 4,419 Hz | -3.1 dB | 0.66 |
Neutral target
Set a preamp of -1.9 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: 92 out of 100, up from 43.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.8 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 23 Hz | +2.0 dB | 2.69 |
| Peak | 88 Hz | -2.9 dB | 1.04 |
| Peak | 474 Hz | +0.8 dB | 1.77 |
| Peak | 1,251 Hz | +2.5 dB | 5.54 |
| Peak | 2,020 Hz | -1.1 dB | 2.58 |
| Peak | 4,419 Hz | -3.1 dB | 0.66 |
Studio flat target
Set a preamp of -2.0 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 Studio flat match with this EQ: 90 out of 100, up from 27.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.8 dB | 0.70 |
| High shelf | 10,000 Hz | +1.8 dB | 0.70 |
| Peak | 122 Hz | -3.9 dB | 0.78 |
| Peak | 1,257 Hz | +2.3 dB | 6.00 |
| Peak | 1,818 Hz | -1.2 dB | 6.00 |
| Peak | 5,129 Hz | -4.6 dB | 1.46 |
Warm target
Set a preamp of -1.9 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: 93 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.0 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 23 Hz | +2.4 dB | 2.36 |
| Peak | 93 Hz | -2.4 dB | 1.21 |
| Peak | 490 Hz | +1.1 dB | 1.49 |
| Peak | 1,231 Hz | +2.7 dB | 4.46 |
| Peak | 2,020 Hz | -1.2 dB | 2.91 |
| Peak | 4,458 Hz | -5.1 dB | 0.67 |
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 the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 72.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.6 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 23 Hz | +2.5 dB | 2.22 |
| Peak | 99 Hz | -2.4 dB | 1.14 |
| Peak | 480 Hz | +0.8 dB | 1.85 |
| Peak | 1,253 Hz | +2.5 dB | 5.74 |
| Peak | 2,020 Hz | -1.1 dB | 2.61 |
| Peak | 4,419 Hz | -3.1 dB | 0.66 |
Bright target
Set a preamp of -1.9 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: 91 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.3 dB | 0.70 |
| Peak | 23 Hz | +2.0 dB | 2.69 |
| Peak | 89 Hz | -2.9 dB | 0.99 |
| Peak | 456 Hz | +0.8 dB | 2.08 |
| Peak | 1,255 Hz | +2.2 dB | 6.00 |
| Peak | 1,807 Hz | -1.3 dB | 5.81 |
| Peak | 2,576 Hz | -2.5 dB | 1.86 |
| Peak | 6,906 Hz | +1.8 dB | 3.03 |
V-shaped target
Set a preamp of -5.7 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 V-shaped match with this EQ: 88 out of 100, up from 77.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.2 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 23 Hz | +2.5 dB | 2.29 |
| Peak | 80 Hz | -2.0 dB | 1.84 |
| Peak | 363 Hz | +1.5 dB | 1.49 |
| Peak | 888 Hz | -1.2 dB | 5.16 |
| Peak | 1,267 Hz | +1.8 dB | 6.00 |
| Peak | 1,781 Hz | -1.1 dB | 6.00 |
| Peak | 2,526 Hz | -1.9 dB | 1.76 |
| Peak | 6,781 Hz | +2.0 dB | 2.98 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the TANCHJIM ZERO DSP 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 hobbytalk, tanchjim and therollo9. Thanks to each of them for publishing their work.