The FiiO F9 ranks #625 out of 971 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Fiio
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#625 FiiO F9: $99.99 Discontinued eBay
Pros: A budget hybrid that measures reasonably well (Harman score 65) and came with both 3.5mm and 2.5mm balanced cables.
Cons: Discontinued, so it is mainly found used. A slightly bright tilt (+0.32) and a 2.98 dB spread from the target mean some treble edge, and newer budget IEMs measure better for the money.
| Released | 2017 (9 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.98 dB standard deviation |
| Driver Type | Hybrid |
| Drivers | 1 x 9.2mm dynamic + 2 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 15Hz - 40kHz |
| Harman Preference Score | 65 (measured by crinacle, via AutoEQ) |
| Impedance | 28 ohms |
| Sensitivity | 106 dB/mW |
| Tonal Tilt | +0.32 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.7 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 | +3.5 dB | 0.70 |
| Peak | 135 Hz | -3.2 dB | 0.54 |
| Peak | 3,299 Hz | +6.8 dB | 2.86 |
| Peak | 714 Hz | +3.7 dB | 1.62 |
| Peak | 7,411 Hz | -5.6 dB | 2.72 |
| High shelf | 10,000 Hz | -0.4 dB | 0.70 |
| Peak | 1,888 Hz | -3.2 dB | 1.86 |
| Peak | 2,715 Hz | +2.5 dB | 4.44 |
| Peak | 1,013 Hz | +1.5 dB | 3.25 |
| Peak | 5,724 Hz | +1.6 dB | 6.00 |
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