The SymphonyEars Hexad II ranks #840 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: SymphonyEars
Prices on this page were last checked October 16, 2026 at 5:46 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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#840 SymphonyEars Hexad II: $499 eBay
Older model: the SymphonyEars Hexad (ranked higher, rated 4/5). See every SymphonyEars Hexad generation.
Pros: A broadly balanced tuning with a preference score of 67 against the Harman target.
Cons: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.0 dB standard deviation from target.
Is the SymphonyEars Hexad II right for you?
Buy it if
- your taste runs warm: it scores 80 for that sound.
- you are sensitive to bright or sharp treble (treble sits 4.0 dB below 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 20 points.
Skip it if
- you want the best value: the higher-rated EPZ G10 costs about $475 less.
| Back | Closed |
|---|---|
| Connection | Wired (3.5mm / 4.4mm) |
| Deviation From Target | 2.01 dB standard deviation |
| Driver Type | Balanced Armature |
| Drivers | 6 Balanced Armature |
| Form Factor | In-ear |
| Harman Preference Score | 67 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.4 dB at 30 Hz) |
| Tonal Tilt | -0.69 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -4.4 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: 87 out of 100, up from 67.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.5 dB | 0.70 |
| High shelf | 10,000 Hz | -4.6 dB | 0.70 |
| Peak | 23 Hz | -0.8 dB | 2.49 |
| Peak | 81 Hz | +0.7 dB | 1.28 |
| Peak | 544 Hz | -2.0 dB | 1.06 |
| Peak | 2,088 Hz | +2.0 dB | 3.05 |
| Peak | 4,419 Hz | +4.4 dB | 0.56 |
| Peak | 6,334 Hz | -1.2 dB | 5.50 |
Neutral target
Set a preamp of -4.4 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: 88 out of 100, up from 36.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.0 dB | 0.70 |
| High shelf | 10,000 Hz | -4.6 dB | 0.70 |
| Peak | 540 Hz | -2.0 dB | 1.02 |
| Peak | 2,087 Hz | +2.0 dB | 3.04 |
| Peak | 4,419 Hz | +4.4 dB | 0.56 |
Studio flat target
Set a preamp of -6.5 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 Studio flat match with this EQ: 85 out of 100, up from 16.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.6 dB | 0.70 |
| High shelf | 10,000 Hz | +0.7 dB | 0.70 |
| Peak | 24 Hz | -1.6 dB | 1.79 |
| Peak | 68 Hz | +0.9 dB | 2.92 |
| Peak | 166 Hz | -0.7 dB | 2.45 |
| Peak | 398 Hz | -2.6 dB | 0.51 |
| Peak | 2,603 Hz | +6.0 dB | 1.13 |
| Peak | 5,568 Hz | +1.1 dB | 0.48 |
Warm target
Set a preamp of -3.3 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 Warm match with this EQ: 93 out of 100, up from 80.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.8 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 595 Hz | -1.6 dB | 0.89 |
| Peak | 2,443 Hz | +3.2 dB | 0.96 |
| Peak | 7,886 Hz | +2.0 dB | 1.21 |
Bass target
Set a preamp of -4.4 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: 89 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.3 dB | 0.70 |
| High shelf | 10,000 Hz | -4.6 dB | 0.70 |
| Peak | 546 Hz | -2.0 dB | 1.07 |
| Peak | 2,088 Hz | +2.0 dB | 3.06 |
| Peak | 4,419 Hz | +4.4 dB | 0.56 |
Bright target
Set a preamp of -5.6 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 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 82 out of 100, up from 23.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -8.0 dB | 0.70 |
| High shelf | 10,000 Hz | -1.5 dB | 0.70 |
| Peak | 23 Hz | -1.3 dB | 1.71 |
| Peak | 546 Hz | -2.1 dB | 1.00 |
| Peak | 1,092 Hz | -0.9 dB | 2.83 |
| Peak | 2,441 Hz | +1.5 dB | 1.34 |
| Peak | 5,345 Hz | +5.5 dB | 0.47 |
| Peak | 7,022 Hz | -3.6 dB | 5.52 |
V-shaped target
Set a preamp of -6.2 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 V-shaped match with this EQ: 77 out of 100, up from 55.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.0 dB | 0.70 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 135 Hz | +1.5 dB | 0.86 |
| Peak | 781 Hz | -2.2 dB | 1.32 |
| Peak | 2,443 Hz | +1.9 dB | 2.24 |
| Peak | 3,807 Hz | +0.8 dB | 1.97 |
| Peak | 5,345 Hz | +5.6 dB | 0.43 |
| Peak | 7,058 Hz | -3.8 dB | 5.12 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the SymphonyEars Hexad II 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 audioamigo, jaytiss and superreview. Thanks to each of them for publishing their work.
Head-to-Head Comparisons
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