The 64 Audio Solo ranks #521 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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#521 64 Audio Solo: $1,399.00 Headphones.com $1,399.00 eBay
Pros: The single 14.2mm planar driver reaches full depth, sitting within 0.3 dB of target from 20 to 60 Hz on the median of nine squig.link measurements, so bass notes keep their weight without being pumped up. Midbass carries only a gentle 1.7 dB lift, which gives a warm, full low end that suits listeners who like a relaxed tuning. At 12 ohms and 100 dB sensitivity it plays from a phone or small dongle without trouble.
Cons: A dip of 6.4 dB near 3.5 kHz pulls the presence region 5.5 dB below target, so vocals and guitars sound distant and lack bite. The air band rises 4.4 dB above 10 kHz, adding a thin sheen on top of that recessed middle and leaving a preference score of only 68.7. The 64 Audio U4s earns a higher rating for less money.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.29 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 14.2mm planar magnetic |
| Form Factor | In-ear |
| Harman Preference Score | 69 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 12 ohms |
| Sensitivity | 100 dB @ 1kHz |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.2 dB at 30 Hz) |
| Tonal Tilt | -0.64 (negative is warmer, positive brighter) |
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