Short answer: a tie on sound quality. Both are rated 4.7/5 (#32 and #27 of 450 in-ear headphones), so choose on features and fit.
Why pick the Moondrop Solis 2: The Solis 2 combines dynamic, balanced armature and electrostatic drivers, and the median of five hobbyist measurements on squig.link gives it a preference score of 82 with about 1.2 dB of unevenness. The tradeoff: A 4.7 dB peak near 8.1 kHz can make cymbals and sibilants a touch hot, while the presence region dips about 3.5 dB near 5.9 kHz.
What the Truthear Hexa does well: 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 tradeoff: 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 Moondrop Solis 2 or the Truthear Hexa on features: they are rated the same for sound quality at close to the same price.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Moondrop Solis 2 | Truthear Hexa | |
|---|---|---|
| Price | $2,999.00 | - |
| Ranked | #32 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 | 82 (median of 5 squig.link measurements, calibrated to AutoEQ) | 82 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 1.23 dB standard deviation | 1.58 dB standard deviation |
| Tonal Tilt | -0.18 (negative is warmer, positive brighter) | -0.05 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature + 4 electrostatic) | Hybrid (1 dynamic + 3 balanced armature) |
| Drivers | 2 x 10mm dynamic + 2 x balanced armature + 4 x electrostatic | 1 x dynamic + 3 x balanced armature |
| Impedance | 10 ohms | 20.5 ohms |
| Sensitivity | 121 dB/Vrms | 120 dB/Vrms |
| Frequency Response | 7Hz - 40kHz (Manufacturer specified) | 8Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
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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
Moondrop Solis 2: $2,999.00 Amazon eBay
Pros: The Solis 2 combines dynamic, balanced armature and electrostatic drivers, and the median of five hobbyist measurements on squig.link gives it a preference score of 82 with about 1.2 dB of unevenness. Sub-bass sits right on target and bass runs about 1 dB rich, so it suits listeners who want warmth and weight without boom. Sensitivity of 121 dB/Vrms means it runs easily from a phone or dongle, and it rates well above the Noble Audio Sultan.
Cons: A 4.7 dB peak near 8.1 kHz can make cymbals and sibilants a touch hot, while the presence region dips about 3.5 dB near 5.9 kHz. The SoftEars RS10 rates higher for considerably less money, which makes this flagship hard to justify on sound alone.
Full Moondrop Solis 2 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.23 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature + 4 electrostatic) |
| Drivers | 2 x 10mm dynamic + 2 x balanced armature + 4 x electrostatic |
| Form Factor | In-ear |
| Frequency Response | 7Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 82 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 10 ohms |
| Sensitivity | 121 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) |
| Tonal Tilt | -0.18 (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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