The FiiO FA9 ranks #75 out of 115 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Fiio
Prices on this page were last checked October 10, 2026 at 5:37 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#75 FiiO FA9: $499.99 Amazon eBay
Pros: Six balanced armatures per side and sensitivity of 110 to 113 dB/mW make it easy to drive from a phone, with an impedance switch between 16 and 32 ohms to tune the match with a source. Each earpiece weighs just 6.2 g. Bass and low mids sit at or slightly above target, which suits listeners who like a warm, smooth balance, and it is rated above the pricier Kinera Skuld.
Cons: oratory1990’s measurement shows presence averaging 6.8 dB below target with a 9.6 dB dip near 3.4 kHz, so vocals and lead instruments sound pushed back and lack clarity. Sub-bass runs about 3.7 dB under target, so electronic music has less low rumble than the specs suggest.
| Released | 2020 (6 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 3.22 dB standard deviation |
| Driver Type | Balanced armature |
| Drivers | 6 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 15Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 59 (measured by oratory1990, via AutoEQ) |
| Impedance | 16 ohms (switchable to 32 ohms) |
| Sensitivity | 110/113 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.8 dB at 30 Hz) |
| Tonal Tilt | -0.61 (negative is warmer, positive brighter) |
| Weight | 0 lbs (6.2 g) per earpiece |
EQ preset to match the Harman target
Set a preamp of -5.6 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 | +2.1 dB | 0.70 |
| Peak | 182 Hz | -3.9 dB | 0.55 |
| Peak | 2,946 Hz | +5.3 dB | 1.88 |
| Peak | 1,302 Hz | -2.0 dB | 1.48 |
| Peak | 7,001 Hz | +2.9 dB | 0.83 |
| High shelf | 10,000 Hz | -2.7 dB | 0.70 |
| Peak | 8,655 Hz | +1.3 dB | 2.14 |
| Peak | 4,276 Hz | -2.3 dB | 6.00 |
| Peak | 5,231 Hz | +3.0 dB | 5.93 |
| Peak | 6,241 Hz | -1.8 dB | 6.00 |
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