Short answer: a tie on sound quality. Both are rated 4.7/5 (#26 and #27 of 450 in-ear headphones), so choose on features and fit.
The case for 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. The catch: 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.
The case for the Truthear Hexa: A preference score of 82 in oratory1990’s measurement and a 1.58 dB deviation put this hybrid of one dynamic driver and three balanced armatures very close to the Harman target. The catch: The presence region from 3 to 6 kHz sits 2.6 dB under target with a 4 dB dip near 4.5 kHz, which pushes vocals and guitars slightly back.
Buy the Aoshida E20 or the Truthear Hexa on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| Aoshida E20 | Truthear Hexa | |
|---|---|---|
| Price | $22.99 | - |
| Ranked | #26 of 450 in In-Ear Headphones | #27 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 83 (median of 6 squig.link measurements, calibrated to AutoEQ) | 82 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 1.13 dB standard deviation | 1.58 dB standard deviation |
| Tonal Tilt | +0.26 (negative is warmer, positive brighter) | -0.05 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid (1 dynamic + 3 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic | 1 x dynamic + 3 x balanced armature |
| Impedance | 12 ohms | 20.5 ohms |
| Sensitivity | 98 dB | 120 dB/Vrms |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 8Hz - 40kHz (Manufacturer specified) |
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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
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
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Truthear Hexa AliExpress eBay
Pros: A preference score of 82 in oratory1990’s measurement and a 1.58 dB deviation put this hybrid of one dynamic driver and three balanced armatures very close to the Harman target. Bass from 60 to 200 Hz is within 0.2 dB of target and sub-bass is just 1.7 dB down at 30 Hz, so low end is full but controlled. The 20.5 ohm impedance and 120 dB/Vrms sensitivity make it easy to drive from a phone.
Cons: The presence region from 3 to 6 kHz sits 2.6 dB under target with a 4 dB dip near 4.5 kHz, which pushes vocals and guitars slightly back. A 4.7 dB peak near 8.3 kHz and extra air above 10 kHz can make sibilance stand out on bright recordings.
Full Truthear Hexa review and specifications →
| Released | 2022 (4 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.58 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 3 balanced armature) |
| Drivers | 1 x dynamic + 3 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 8Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 82 (measured by oratory1990, via AutoEQ) |
| Impedance | 20.5 ohms |
| Sensitivity | 120 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) |
| Tonal Tilt | -0.05 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -3.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.1 dB | 0.70 |
| Peak | 4,844 Hz | +3.4 dB | 1.81 |
| Peak | 199 Hz | -1.9 dB | 1.54 |
| Peak | 62 Hz | +1.6 dB | 1.05 |
| Peak | 3,160 Hz | -2.1 dB | 3.72 |
| High shelf | 10,000 Hz | -4.4 dB | 0.70 |
| Peak | 707 Hz | +1.0 dB | 1.89 |
| Peak | 6,318 Hz | +1.6 dB | 5.54 |
| Peak | 349 Hz | -0.5 dB | 2.22 |
| Peak | 2,113 Hz | +0.6 dB | 3.41 |
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