Short answer: the SymphonyEars Hexad II, if you are buying new. The SymphonyEars Hexad ranks higher than it (#461 vs #840 of 1253 in-ear headphones, 4.0/5 vs 3.5/5) but is discontinued, so only consider it used; the SymphonyEars Hexad II is still sold new at $499.

The SymphonyEars Hexad is the better-sounding option. A broadly balanced tuning with a preference score of 73 against the Harman target. The catch: An uneven response, 2.0 dB standard deviation from target.
What the SymphonyEars Hexad II does well: A broadly balanced tuning with a preference score of 67 against the Harman target. The catch: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the SymphonyEars Hexad II if you want one new; the SymphonyEars Hexad is discontinued, so only look for it used.
Looking for alternatives? See the complete Headphones rankings.
A broadly balanced tuning with a preference score of 73 against the Harman target.
eBayA broadly balanced tuning with a preference score of 67 against the Harman target.
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Specifications Side By Side
| SymphonyEars Hexad | SymphonyEars Hexad II | |
|---|---|---|
| Price | $275 Discontinued | $499 |
| Ranked | #461 of 1253 in In-Ear Headphones | #840 of 1253 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 73 (median of 4 squig.link measurements, calibrated to AutoEQ) | 67 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.99 dB standard deviation | 2.01 dB standard deviation |
| Tonal Tilt | -0.35 (negative is warmer, positive brighter) | -0.69 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.4 dB at 30 Hz) |
| Connection | Wired | Wired (3.5mm / 4.4mm) |
| Driver Type | Balanced Armature | Balanced Armature |
| Drivers | 6 x balanced armature | 6 Balanced Armature |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the SymphonyEars Hexad from audioamigo, isaiahse, jaytiss and pw; the SymphonyEars Hexad II from audioamigo, jaytiss and superreview, all via squig.link.
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