The 64 Audio Nio ranks #649 out of 946 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: 64 Audio
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#649 64 Audio Nio: $1,699.00 Bloom Audio $1,699.00 eBay
Pros: A warm, bass-forward tuning with sub-bass about 2 dB and mid-bass about 3 dB above target gives kick drums and bass lines real weight, and the response holds within 6 dB of target all the way down to 20 Hz. Treble is gentle rather than sharp, with the 6 to 10 kHz band sitting slightly below target, so long sessions stay free of glare. The hybrid design pairs a 9mm dynamic driver with eight balanced armatures, and 108 dB/mW sensitivity means a phone drives it to full volume easily.
Cons: Across 7 hobbyist measurements on squig.link it reaches a preference score of only 63, held back by a 5.8 dB dip near 3.2 kHz and a presence region about 3.4 dB low, which pushes vocals and guitars back and dulls their edge. The very low 6 ohm impedance can make the tonal balance shift on sources with high output impedance, and the 64 Audio U12t rates a little higher in the same bracket.
| Released | Oct 2020 (6 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.51 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 8 balanced armature) |
| Drivers | 1 x 9mm dynamic + 8 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 63 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 6 ohms |
| Sensitivity | 108 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) |
| Tonal Tilt | -1.01 (negative is warmer, positive brighter) |
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