The FiiO JD7 ranks #549 out of 1061 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Fiio
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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#549 FiiO JD7 eBay
Pros: A budget single dynamic IEM from FiiO’s JadeAudio line. Measurements show full sub-bass to 20 Hz (score 70 across four measurements).
Cons: A 2.21 dB spread from the target still leaves some peaks and dips.
Is the FiiO JD7 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 13 points.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.21 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 70 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 108 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.4 dB at 30 Hz) |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -3.8 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 83 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.4 dB | 0.70 |
| High shelf | 10,000 Hz | +0.6 dB | 0.70 |
| Peak | 174 Hz | -3.4 dB | 0.78 |
| Peak | 5,345 Hz | +3.7 dB | 1.17 |
Neutral target
Set a preamp of -3.8 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 85 out of 100, up from 36.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.9 dB | 0.70 |
| High shelf | 10,000 Hz | +0.6 dB | 0.70 |
| Peak | 157 Hz | -3.3 dB | 0.66 |
| Peak | 5,345 Hz | +3.7 dB | 1.16 |
Studio flat target
Set a preamp of -3.8 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 90 out of 100, up from 18.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.5 dB | 0.70 |
| High shelf | 10,000 Hz | +1.9 dB | 0.70 |
| Peak | 172 Hz | -5.2 dB | 0.74 |
| Peak | 3,383 Hz | +3.7 dB | 0.92 |
| Peak | 6,017 Hz | +1.6 dB | 6.00 |
Warm target
Set a preamp of -2.6 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 Warm match with this EQ: 86 out of 100, up from 78.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| High shelf | 10,000 Hz | -2.6 dB | 0.70 |
| Peak | 24 Hz | +0.6 dB | 1.16 |
| Peak | 162 Hz | -3.2 dB | 0.78 |
| Peak | 740 Hz | +1.2 dB | 2.79 |
| Peak | 1,550 Hz | -0.9 dB | 2.41 |
| Peak | 3,805 Hz | +0.9 dB | 3.59 |
| Peak | 5,957 Hz | +2.8 dB | 3.11 |
| Peak | 8,000 Hz | -2.3 dB | 6.00 |
Bass target
Set a preamp of -3.8 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 84 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.4 dB | 0.70 |
| High shelf | 10,000 Hz | +0.6 dB | 0.70 |
| Peak | 176 Hz | -3.4 dB | 0.82 |
| Peak | 5,345 Hz | +3.7 dB | 1.17 |
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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 86 out of 100, up from 26.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.9 dB | 0.70 |
| High shelf | 10,000 Hz | +1.9 dB | 0.70 |
| Peak | 157 Hz | -3.4 dB | 0.64 |
| Peak | 4,740 Hz | +6.0 dB | 1.35 |
V-shaped 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 80 out of 100, up from 66.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.1 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 4,571 Hz | +6.0 dB | 1.19 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the FiiO JD7 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 aftersound, arn, joshtbvo and mmagtech. Thanks to each of them for publishing their work.