The qdc x FitEar Superior EX ranks #959 out of 1369 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: qdc
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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#959 qdc x FitEar Superior EX: 45.00 Elise Audio 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: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.6 dB standard deviation from target.
Is the qdc x FitEar Superior EX right for you?
Buy it if
- you are sensitive to bright or sharp treble (treble sits 4.3 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 $21 less.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.57 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm coaxial dual-magnetic dynamic driver |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 40kHz |
| Harman Preference Score | 65 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 100 dB SPL/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.7 dB at 30 Hz) |
| Tonal Tilt | -0.72 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.5 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: 86 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.5 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 148 Hz | -2.9 dB | 0.86 |
| Peak | 1,633 Hz | -2.9 dB | 3.01 |
| Peak | 2,967 Hz | +2.9 dB | 5.78 |
| Peak | 4,708 Hz | +5.2 dB | 0.97 |
Neutral target
Set a preamp of -5.5 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: 87 out of 100, up from 31.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 133 Hz | -2.9 dB | 0.74 |
| Peak | 1,634 Hz | -2.8 dB | 3.03 |
| Peak | 2,967 Hz | +2.9 dB | 5.77 |
| Peak | 4,708 Hz | +5.2 dB | 0.97 |
Studio flat 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 88 out of 100, up from 13.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.6 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 160 Hz | -4.7 dB | 0.77 |
| Peak | 692 Hz | +1.6 dB | 2.40 |
| Peak | 1,633 Hz | -3.0 dB | 3.06 |
| Peak | 2,954 Hz | +6.0 dB | 1.46 |
| Peak | 5,732 Hz | +5.1 dB | 4.81 |
Warm target
Set a preamp of -3.6 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: 80 out of 100, up from 75.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.8 dB | 0.70 |
| High shelf | 10,000 Hz | -1.0 dB | 0.70 |
| Peak | 5,345 Hz | +3.6 dB | 1.04 |
Bass target
Set a preamp of -5.5 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: 87 out of 100, up from 69.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.3 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 153 Hz | -2.9 dB | 0.92 |
| Peak | 1,633 Hz | -2.9 dB | 3.00 |
| Peak | 2,967 Hz | +2.9 dB | 5.79 |
| Peak | 4,708 Hz | +5.2 dB | 0.97 |
Bright target
Set a preamp of -6.6 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 Bright match with this EQ: 79 out of 100, up from 19.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.0 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 132 Hz | -3.0 dB | 0.75 |
| Peak | 686 Hz | +1.6 dB | 2.10 |
| Peak | 1,682 Hz | -3.5 dB | 2.33 |
| Peak | 3,354 Hz | +6.0 dB | 1.18 |
| Peak | 5,438 Hz | +4.1 dB | 3.53 |
V-shaped target
Set a preamp of -6.6 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 V-shaped match with this EQ: 74 out of 100, up from 58.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.9 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 24 Hz | +1.3 dB | 1.48 |
| Peak | 126 Hz | -1.6 dB | 1.16 |
| Peak | 595 Hz | +1.5 dB | 1.79 |
| Peak | 1,649 Hz | -3.6 dB | 2.17 |
| Peak | 3,148 Hz | +6.0 dB | 1.15 |
| Peak | 5,354 Hz | +4.3 dB | 3.10 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the qdc x FitEar Superior EX 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 aden, ekaudio, faxepremium and smirk. Thanks to each of them for publishing their work.
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