The 64 Audio Duo ranks #630 out of 668 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: 64 Audio
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#630 64 Audio Duo Discontinued eBay
Pros: It uses 1 x dynamic + 1 x tia high driver.
Cons: Discontinued, so it is mainly found used. A Harman score of 49 places it in the lower part of the in-ear rankings.
| Released | 2021 (5 years ago) |
|---|---|
| Connection | Wired |
| Deviation From Target | 3.70 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 x dynamic + 1 x tia high driver |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz |
| Harman Preference Score | 49 (measured by crinacle, via AutoEQ) |
| Sensitivity | 98 dB/mW |
| Tonal Tilt | -1.25 (negative is warmer, positive brighter) |
EQ preset to match the Harman 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 AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.2 dB | 0.70 |
| Peak | 161 Hz | -5.6 dB | 0.51 |
| Peak | 4,061 Hz | +4.0 dB | 4.32 |
| Peak | 7,516 Hz | +4.1 dB | 0.61 |
| Peak | 835 Hz | +2.4 dB | 1.23 |
| High shelf | 10,000 Hz | -8.4 dB | 0.70 |
| Peak | 9,503 Hz | +4.0 dB | 2.79 |
| Peak | 6,102 Hz | +2.2 dB | 5.87 |
| Peak | 41 Hz | -0.4 dB | 2.04 |
| Peak | 5,222 Hz | -1.3 dB | 6.00 |
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