The ND X12 ranks #606 out of 1061 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: ND
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.
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#606 ND X12: $62.99 Amazon $62.99 eBay
Pros: A budget hybrid with one dynamic driver, five balanced armatures and three tuning settings. Measurements show bass right on the Harman target and full sub-bass to 20 Hz (score 69 across six measurements).
Cons: Treble sits about 3.2 dB above target, so it can sound bright.
Is the ND X12 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 19 points.
Skip it if
- you are treble-sensitive (treble sits about 3.2 dB above target).
- you want the best value: the higher-rated EPZ G10 costs about $39 less.
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.12 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 x dynamic + 5 x balanced armature |
| Form Factor | In-ear |
| Harman Preference Score | 69 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.0 dB at 30 Hz) |
| Tonal Tilt | +0.61 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -1.7 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 88 out of 100, up from 69.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.3 dB | 0.70 |
| High shelf | 10,000 Hz | -4.3 dB | 0.70 |
| Peak | 150 Hz | -2.3 dB | 1.15 |
| Peak | 742 Hz | +2.1 dB | 1.46 |
| Peak | 2,171 Hz | -3.4 dB | 5.69 |
| Peak | 3,893 Hz | -2.9 dB | 0.49 |
| Peak | 4,390 Hz | -2.0 dB | 6.00 |
| Peak | 6,053 Hz | +3.2 dB | 6.00 |
| Peak | 7,911 Hz | -3.0 dB | 6.00 |
Neutral target
Set a preamp of -1.7 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 90 out of 100, up from 51.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.2 dB | 0.70 |
| High shelf | 10,000 Hz | -4.3 dB | 0.70 |
| Peak | 133 Hz | -2.3 dB | 0.91 |
| Peak | 739 Hz | +2.1 dB | 1.44 |
| Peak | 2,171 Hz | -3.4 dB | 5.69 |
| Peak | 3,893 Hz | -2.9 dB | 0.49 |
| Peak | 4,390 Hz | -2.0 dB | 6.00 |
| Peak | 6,053 Hz | +3.2 dB | 6.00 |
| Peak | 7,911 Hz | -3.0 dB | 6.00 |
Studio flat target
Set a preamp of -1.8 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 89 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.8 dB | 0.70 |
| Peak | 162 Hz | -4.1 dB | 0.90 |
| Peak | 2,071 Hz | -3.6 dB | 5.30 |
| Peak | 3,150 Hz | +3.3 dB | 5.27 |
| Peak | 4,723 Hz | -5.2 dB | 1.97 |
| Peak | 7,662 Hz | -4.3 dB | 6.00 |
Warm target
Set a preamp of -0.7 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 80 out of 100, up from 58.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.6 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 2,174 Hz | -4.4 dB | 4.51 |
| Peak | 6,887 Hz | -5.4 dB | 0.40 |
Bass 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 the median of 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 89 out of 100, up from 57.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.1 dB | 0.70 |
| High shelf | 10,000 Hz | -4.3 dB | 0.70 |
| Peak | 155 Hz | -2.3 dB | 1.23 |
| Peak | 743 Hz | +2.1 dB | 1.47 |
| Peak | 2,171 Hz | -3.4 dB | 5.68 |
| Peak | 3,893 Hz | -2.9 dB | 0.49 |
| Peak | 4,390 Hz | -2.0 dB | 6.00 |
| Peak | 6,053 Hz | +3.2 dB | 6.00 |
| Peak | 7,911 Hz | -3.0 dB | 6.00 |
Bright target
Set a preamp of -3.2 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 83 out of 100, up from 47.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.3 dB | 0.70 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 2,164 Hz | -5.2 dB | 3.08 |
| Peak | 4,305 Hz | -3.0 dB | 6.00 |
| Peak | 6,008 Hz | +3.4 dB | 6.00 |
V-shaped target
Set a preamp of -4.9 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 90 out of 100, up from 66.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 593 Hz | +1.7 dB | 1.75 |
| Peak | 2,140 Hz | -4.6 dB | 3.19 |
| Peak | 3,250 Hz | +2.1 dB | 5.36 |
| Peak | 4,312 Hz | -2.3 dB | 6.00 |
| Peak | 5,966 Hz | +4.1 dB | 6.00 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the ND X12 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 6 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 6 measurements from the squig.link databases of audioamigo, jaytiss, obodio, practiphile, pw and riz. Thanks to each of them for publishing their work.