Short answer: the CCA Trio. It ranks #17 of 450 in-ear headphones by sound quality, rated 4.8/5, at $23.99; the Aoshida E20 ranks #26, rated 4.7/5, at $22.99. The price gap is small enough that the sound-quality ranking should decide it.
Why pick the CCA Trio: In squig.link measurements, the median of eight hobbyist samples, it scores 84 for preference, impressive for a very cheap in-ear. The tradeoff: A 5.3 dB peak near 8.4 kHz and air about 2.6 dB above target can make sibilants and cymbals sound sharp on bright tracks.
Why pick the Aoshida E20: Across six hobbyist measurements on squig.link, the E20 reaches a preference score of 82.6 with a smooth 1.13 dB deviation from target. Watch for: A 6 dB peak near 8.4 kHz and treble about 2.1 dB above target from 6 to 10 kHz can make sibilance and hi hats sound sharp on bright recordings.
Buy the CCA Trio. It is rated higher for sound quality, and the $1 saving on the Aoshida E20 is not enough to make up the difference.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| CCA Trio | Aoshida E20 | |
|---|---|---|
| Price | $23.99 | $22.99 |
| Ranked | #17 of 450 in In-Ear Headphones | #26 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 84 (median of 8 squig.link measurements, calibrated to AutoEQ) | 83 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.15 dB standard deviation | 1.13 dB standard deviation |
| Tonal Tilt | -0.12 (negative is warmer, positive brighter) | +0.26 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.8 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 3 x 8mm dynamic | 1 x 10mm dynamic + 1 x 8mm dynamic |
| Sensitivity | 101-103 dB | 98 dB |
| Weight | 0 lbs (10 g) per earbud | - |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 20Hz - 40kHz (Manufacturer specified) |
| Impedance | - | 12 ohms |
Related Headphone Comparisons
How CCA Trio compares with other leading options:
- EPZ G10 vs CCA Trio
- CCA Trio vs Truthear Gate
- CCA Trio vs Simgot EW100P
- EPZ G10 vs Aoshida E20
- Aoshida E20 vs Truthear Hexa
Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Headphones In Full
CCA Trio: $23.99 Amazon eBay
Pros: In squig.link measurements, the median of eight hobbyist samples, it scores 84 for preference, impressive for a very cheap in-ear. Bass is close to target down to 20 Hz with a mild 1.3 dB lift above 60 Hz, giving warm, punchy low end. Three 8 mm dynamic drivers per side give a warm, mildly V shaped sound that suits listeners who enjoy energy in the bass and treble. It is rated above the Aoshida E20 at a similar price.
Cons: A 5.3 dB peak near 8.4 kHz and air about 2.6 dB above target can make sibilants and cymbals sound sharp on bright tracks. At 10 g per earbud it is on the heavier side for an in-ear, and the presence region dips about 1 dB under target, softening vocal edges slightly.
Full CCA Trio review and specifications →
| Released | Feb 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.15 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 3 x 8mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 84 (median of 8 squig.link measurements, calibrated to AutoEQ) |
| Sensitivity | 101-103 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz) |
| Tonal Tilt | -0.12 (negative is warmer, positive brighter) |
| Weight | 0 lbs (10 g) per earbud |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Aoshida E20: $22.99 Amazon eBay
Pros: Across six hobbyist measurements on squig.link, the E20 reaches a preference score of 82.6 with a smooth 1.13 dB deviation from target. Sub-bass sits within a decibel of target down to 30 Hz, and the mids stay within about 1 dB, so vocals sound natural with solid bass underneath. Its dual dynamic driver design and budget price make it a sensible pick for warm or mildly V shaped tastes.
Cons: A 6 dB peak near 8.4 kHz and treble about 2.1 dB above target from 6 to 10 kHz can make sibilance and hi hats sound sharp on bright recordings. Bass from 60 to 200 Hz runs about 1 dB lean, so it has less punch than bass focused alternatives. It is rated level with similarly priced rivals such as the KZ EDZ and DDHiFi Janus 3 rather than above them.
Full Aoshida E20 review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.13 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 83 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 12 ohms |
| Sensitivity | 98 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.8 dB at 30 Hz) |
| Tonal Tilt | +0.26 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons