The CCA CRA Plus ranks #911 out of 1398 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 19, 2026 at 10:32 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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#911 CCA CRA Plus: $24.69 Amazon $24.69 eBay
Pros: A single dynamic driver earphone at about $25 whose response sits close to target at 2.35 dB deviation, with sub bass reaching fully to 20 Hz and bass about 2.5 dB above target for a slightly fuller sound. 111 dB sensitivity makes it loud from any phone, and it comes with or without an inline microphone.
Cons: Upper bass is about 4 dB above target, which thickens male vocals, and a dip near 5.9 kHz followed by a 4 dB peak near 8.2 kHz makes the treble a little uneven. The score rests on three measurements, and the EPZ G10 scores much higher at a similar price.
Is the CCA CRA Plus 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 25 points.
Skip it if
- you want the best value: the higher-rated TRN MT3 costs about $7 less.
| Released | 2022 (4 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.35 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 66 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 23.5 ohms |
| Sensitivity | 111 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.2 dB at 30 Hz) |
| Tonal Tilt | -0.85 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -3.5 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 91 out of 100, up from 66.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.9 dB | 0.70 |
| High shelf | 10,000 Hz | -3.4 dB | 0.70 |
| Peak | 182 Hz | -4.5 dB | 0.82 |
| Peak | 707 Hz | +1.1 dB | 3.30 |
| Peak | 1,419 Hz | -1.0 dB | 3.17 |
| Peak | 3,161 Hz | +1.8 dB | 4.70 |
| Peak | 5,345 Hz | +3.2 dB | 0.81 |
| Peak | 7,877 Hz | -2.4 dB | 6.00 |
Neutral target
Set a preamp of -3.5 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 92 out of 100, up from 28.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.5 dB | 0.70 |
| High shelf | 10,000 Hz | -3.4 dB | 0.70 |
| Peak | 174 Hz | -4.3 dB | 0.72 |
| Peak | 699 Hz | +1.2 dB | 3.02 |
| Peak | 1,420 Hz | -1.0 dB | 3.20 |
| Peak | 3,160 Hz | +1.8 dB | 4.67 |
| Peak | 5,345 Hz | +3.2 dB | 0.80 |
| Peak | 7,876 Hz | -2.4 dB | 6.00 |
Studio flat target
Set a preamp of -5.2 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 Studio flat match with this EQ: 91 out of 100, up from 9.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.9 dB | 0.70 |
| High shelf | 10,000 Hz | +1.1 dB | 0.70 |
| Peak | 171 Hz | -6.4 dB | 0.74 |
| Peak | 327 Hz | -0.8 dB | 2.98 |
| Peak | 712 Hz | +1.1 dB | 3.71 |
| Peak | 1,410 Hz | -0.9 dB | 3.86 |
| Peak | 3,011 Hz | +5.2 dB | 1.66 |
| Peak | 4,607 Hz | -1.9 dB | 6.00 |
| Peak | 5,943 Hz | +2.9 dB | 6.00 |
Warm target
Set a preamp of -2.8 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 91 out of 100, up from 74.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -1.7 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 178 Hz | -4.3 dB | 0.88 |
| Peak | 3,271 Hz | +2.2 dB | 4.12 |
| Peak | 5,871 Hz | +3.6 dB | 6.00 |
| Peak | 8,000 Hz | -3.1 dB | 6.00 |
Bass target
Set a preamp of -3.5 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 74.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.8 dB | 0.70 |
| High shelf | 10,000 Hz | -3.4 dB | 0.70 |
| Peak | 23 Hz | +1.0 dB | 1.11 |
| Peak | 186 Hz | -4.5 dB | 0.87 |
| Peak | 710 Hz | +1.1 dB | 3.42 |
| Peak | 1,419 Hz | -1.0 dB | 3.15 |
| Peak | 3,162 Hz | +1.8 dB | 4.71 |
| Peak | 5,345 Hz | +3.2 dB | 0.81 |
| Peak | 7,878 Hz | -2.4 dB | 6.00 |
Bright 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 Bright match with this EQ: 88 out of 100, up from 17.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.5 dB | 0.70 |
| Peak | 174 Hz | -4.4 dB | 0.70 |
| Peak | 4,708 Hz | +5.2 dB | 0.99 |
V-shaped target
Set a preamp of -5.7 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 V-shaped match with this EQ: 86 out of 100, up from 65.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.5 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 179 Hz | -3.1 dB | 0.91 |
| Peak | 1,357 Hz | -1.4 dB | 3.15 |
| Peak | 3,127 Hz | +1.9 dB | 4.56 |
| Peak | 4,708 Hz | +5.5 dB | 0.95 |
| Peak | 6,900 Hz | -1.7 dB | 6.00 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the CCA CRA Plus 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 achoreviews, practiphile and superreview. Thanks to each of them for publishing their work.
Head-to-Head Comparisons
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