The CCA Hydro ranks #960 out of 1369 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: CCA
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.
As an eBay Partner, we may be compensated if you make a purchase.
#960 CCA Hydro: 24.99 Linsoul eBay
Pros: About 3 dB more bass than the Harman target below 150 Hz, for listeners who want a fuller low end.
Cons: An uneven response, 2.5 dB standard deviation from target.
Is the CCA Hydro right for you?
Buy it if
- you like extra bass (about +3 dB below 150 Hz versus the 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 27 points.
Skip it if
- you want the best value: the higher-rated TRN MT3 costs about $7 less.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.54 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 10 drivers (2 dynamic drivers + 8 balanced armatures) |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz |
| Harman Preference Score | 65 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 15-20 ohms |
| Sensitivity | 102 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.3 dB at 30 Hz) |
| Tonal Tilt | -0.37 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -1.3 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 92 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.4 dB | 0.70 |
| High shelf | 10,000 Hz | -5.5 dB | 0.70 |
| Peak | 23 Hz | +2.9 dB | 1.51 |
| Peak | 73 Hz | -1.2 dB | 2.97 |
| Peak | 137 Hz | -7.0 dB | 0.91 |
| Peak | 230 Hz | -1.5 dB | 3.65 |
| Peak | 555 Hz | +1.8 dB | 1.93 |
| Peak | 1,670 Hz | -1.1 dB | 1.23 |
| Peak | 5,917 Hz | +1.8 dB | 6.00 |
| Peak | 7,751 Hz | -2.3 dB | 6.00 |
Neutral target
Set a preamp of -1.2 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 Neutral match with this EQ: 93 out of 100, up from 31.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.9 dB | 0.70 |
| High shelf | 10,000 Hz | -5.5 dB | 0.70 |
| Peak | 23 Hz | +2.4 dB | 1.71 |
| Peak | 69 Hz | -1.1 dB | 3.06 |
| Peak | 131 Hz | -7.0 dB | 0.85 |
| Peak | 226 Hz | -1.5 dB | 3.57 |
| Peak | 552 Hz | +1.8 dB | 1.90 |
| Peak | 1,670 Hz | -1.1 dB | 1.24 |
| Peak | 5,917 Hz | +1.8 dB | 6.00 |
| Peak | 7,751 Hz | -2.3 dB | 6.00 |
Studio flat target
Set a preamp of -2.2 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: 89 out of 100, up from 15.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.7 dB | 0.70 |
| Peak | 150 Hz | -8.8 dB | 0.95 |
| Peak | 244 Hz | -1.4 dB | 3.92 |
| Peak | 607 Hz | +1.6 dB | 2.04 |
| Peak | 1,396 Hz | -1.1 dB | 3.73 |
| Peak | 2,485 Hz | +2.2 dB | 4.36 |
| Peak | 4,628 Hz | -1.2 dB | 4.41 |
| Peak | 7,736 Hz | -2.7 dB | 3.02 |
Warm target
Set a preamp of -1.6 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: 91 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.1 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 23 Hz | +2.8 dB | 1.55 |
| Peak | 72 Hz | -1.2 dB | 2.98 |
| Peak | 134 Hz | -6.8 dB | 0.93 |
| Peak | 227 Hz | -1.6 dB | 3.61 |
| Peak | 587 Hz | +2.1 dB | 1.63 |
| Peak | 1,556 Hz | -1.1 dB | 2.44 |
| Peak | 6,887 Hz | -2.7 dB | 0.40 |
Bass 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 93 out of 100, up from 66.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.4 dB | 0.70 |
| High shelf | 10,000 Hz | -5.5 dB | 0.70 |
| Peak | 23 Hz | +3.1 dB | 1.45 |
| Peak | 75 Hz | -1.3 dB | 2.95 |
| Peak | 139 Hz | -6.9 dB | 0.93 |
| Peak | 231 Hz | -1.5 dB | 3.67 |
| Peak | 556 Hz | +1.8 dB | 1.94 |
| Peak | 1,670 Hz | -1.1 dB | 1.23 |
| Peak | 5,918 Hz | +1.8 dB | 6.00 |
| Peak | 7,750 Hz | -2.3 dB | 6.00 |
Bright target
Set a preamp of -4.3 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 92 out of 100, up from 24.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.0 dB | 0.70 |
| High shelf | 10,000 Hz | -1.6 dB | 0.70 |
| Peak | 23 Hz | +2.5 dB | 1.69 |
| Peak | 69 Hz | -1.1 dB | 2.99 |
| Peak | 132 Hz | -7.0 dB | 0.86 |
| Peak | 227 Hz | -1.5 dB | 3.57 |
| Peak | 551 Hz | +1.8 dB | 1.90 |
| Peak | 1,495 Hz | -1.4 dB | 2.47 |
| Peak | 5,608 Hz | +4.3 dB | 2.53 |
V-shaped target
Set a preamp of -5.9 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 90 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.1 dB | 0.70 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 23 Hz | +2.9 dB | 1.53 |
| Peak | 71 Hz | -1.2 dB | 3.09 |
| Peak | 128 Hz | -5.8 dB | 1.00 |
| Peak | 218 Hz | -1.5 dB | 3.60 |
| Peak | 489 Hz | +2.1 dB | 2.08 |
| Peak | 1,363 Hz | -1.6 dB | 2.93 |
| Peak | 5,535 Hz | +4.7 dB | 2.11 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the CCA Hydro 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 audioamigo, obodio, pw and superreview. Thanks to each of them for publishing their work.
Head-to-Head Comparisons
3 comparisonsNo comparisons match that search.