The ddHiFi Surface (E14D) ranks #754 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: DDHiFi
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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#754 ddHiFi Surface (E14D): $159 eBay
Pros: A broadly balanced tuning with a preference score of 69 against the Harman target.
Cons: Treble about 3 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.2 dB standard deviation from target.
Is the ddHiFi Surface (E14D) right for you?
Buy it if
- you are sensitive to bright or sharp treble (treble sits 2.9 dB below target).
- 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 21 points.
Skip it if
- you want the best value: the higher-rated EPZ G10 costs about $135 less.
| Back | Closed |
|---|---|
| Connection | Wired (3.5mm / 4.4mm) |
| Deviation From Target | 2.16 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 Dynamic (10mm dynamic driver) |
| Form Factor | In-ear |
| Harman Preference Score | 69 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.4 dB at 30 Hz) |
| Tonal Tilt | -0.79 (negative is warmer, positive brighter) |
EQ Presets
Harman 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 90 out of 100, up from 69.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.8 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 23 Hz | +1.2 dB | 1.41 |
| Peak | 139 Hz | -3.4 dB | 0.93 |
| Peak | 5,284 Hz | +6.0 dB | 2.75 |
Neutral 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 91 out of 100, up from 31.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.3 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 127 Hz | -3.4 dB | 0.80 |
| Peak | 5,283 Hz | +6.0 dB | 2.75 |
Studio flat target
Set a preamp of -3.7 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: 89 out of 100, up from 12.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 150 Hz | -5.1 dB | 0.79 |
| Peak | 1,336 Hz | -1.2 dB | 4.50 |
| Peak | 2,432 Hz | +2.6 dB | 5.62 |
| Peak | 3,747 Hz | -2.3 dB | 6.00 |
| Peak | 5,006 Hz | +3.2 dB | 0.79 |
Warm target
Set a preamp of -5.3 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 94 out of 100, up from 79.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.5 dB | 0.70 |
| Peak | 135 Hz | -3.2 dB | 0.96 |
| Peak | 660 Hz | +1.2 dB | 1.63 |
| Peak | 1,439 Hz | -1.3 dB | 4.15 |
| Peak | 3,347 Hz | -2.1 dB | 3.77 |
| Peak | 5,289 Hz | +5.3 dB | 5.46 |
Bass 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 91 out of 100, up from 76.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 23 Hz | +1.4 dB | 1.29 |
| Peak | 143 Hz | -3.4 dB | 0.98 |
| Peak | 5,284 Hz | +6.0 dB | 2.75 |
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: 81 out of 100, up from 19.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.4 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 129 Hz | -3.5 dB | 0.80 |
| Peak | 5,069 Hz | +6.0 dB | 1.83 |
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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 77 out of 100, up from 63.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.7 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 122 Hz | -2.3 dB | 1.17 |
| Peak | 4,959 Hz | +6.0 dB | 1.60 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the ddHiFi Surface (E14D) 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 arn, flare and tonedeafmonk. Thanks to each of them for publishing their work.