The FiiO FW3 ranks #999 out of 1369 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 17, 2026 at 6:04 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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#999 FiiO FW3: $69.99 Wireless Amazon $69.99 eBay
Pros: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Cons: An uneven response, 2.6 dB standard deviation from target.
Is the FiiO FW3 right for you?
Buy it if
- you want sub-bass rumble that reaches down to 20 Hz.
- you are happy to use EQ: our preset lifts its Harman match by about 29 points.
Skip it if
- you want the best value: the higher-rated EPZ G10 costs about $46 less.
| Active Noise Cancelling | No |
|---|---|
| Back | Closed |
| Battery Life | 7 hours (earbuds), 21 hours (with charging case) |
| Bluetooth Codecs | LDAC, LHDC, aptX Adaptive, aptX, AAC, SBC |
| Bluetooth Version | 5.2 |
| Connection | Wireless |
| Deviation From Target | 2.58 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm carbon-based dynamic driver |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz |
| Harman Preference Score | 64 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 106 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.2 dB at 30 Hz) |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) |
| Weight | 0 lbs (6 g) (per earbud) |
EQ Presets
Harman target
Set a preamp of -3.9 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 93 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.4 dB | 0.70 |
| Peak | 34 Hz | +0.8 dB | 1.29 |
| Peak | 217 Hz | -4.9 dB | 0.68 |
| Peak | 477 Hz | -0.9 dB | 2.03 |
| Peak | 2,081 Hz | +1.8 dB | 2.68 |
| Peak | 3,654 Hz | +3.8 dB | 0.81 |
| Peak | 5,461 Hz | -3.1 dB | 6.00 |
| Peak | 7,706 Hz | -1.6 dB | 6.00 |
Neutral target
Set a preamp of -3.9 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 94 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.8 dB | 0.70 |
| High shelf | 10,000 Hz | +0.4 dB | 0.70 |
| Peak | 208 Hz | -4.9 dB | 0.63 |
| Peak | 465 Hz | -0.8 dB | 2.03 |
| Peak | 2,080 Hz | +1.8 dB | 2.65 |
| Peak | 3,654 Hz | +3.8 dB | 0.80 |
| Peak | 5,462 Hz | -3.1 dB | 6.00 |
| Peak | 7,701 Hz | -1.6 dB | 6.00 |
Studio flat target
Set a preamp of -6.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 92 out of 100, up from 16.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.3 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 205 Hz | -6.7 dB | 0.67 |
| Peak | 458 Hz | -1.1 dB | 2.06 |
| Peak | 2,618 Hz | +6.0 dB | 1.24 |
| Peak | 3,983 Hz | +1.7 dB | 4.30 |
| Peak | 5,489 Hz | -3.0 dB | 6.00 |
Warm target
Set a preamp of -3.0 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 94 out of 100, up from 73.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.0 dB | 0.70 |
| High shelf | 10,000 Hz | -1.9 dB | 0.70 |
| Peak | 34 Hz | +0.8 dB | 1.26 |
| Peak | 215 Hz | -4.7 dB | 0.69 |
| Peak | 448 Hz | -0.8 dB | 2.59 |
| Peak | 2,362 Hz | +3.0 dB | 1.31 |
| Peak | 4,010 Hz | +2.2 dB | 5.96 |
| Peak | 5,432 Hz | -1.9 dB | 6.00 |
| Peak | 7,600 Hz | -2.5 dB | 1.93 |
Bass target
Set a preamp of -5.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 94 out of 100, up from 60.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.6 dB | 0.70 |
| High shelf | 10,000 Hz | +0.4 dB | 0.70 |
| Peak | 34 Hz | +1.0 dB | 1.20 |
| Peak | 220 Hz | -4.9 dB | 0.70 |
| Peak | 482 Hz | -0.9 dB | 2.03 |
| Peak | 2,082 Hz | +1.9 dB | 2.69 |
| Peak | 3,654 Hz | +3.8 dB | 0.81 |
| Peak | 5,460 Hz | -3.1 dB | 6.00 |
| Peak | 7,708 Hz | -1.6 dB | 6.00 |
Bright target
Set a preamp of -5.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 88 out of 100, up from 25.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.8 dB | 0.70 |
| High shelf | 10,000 Hz | +1.9 dB | 0.70 |
| Peak | 217 Hz | -4.8 dB | 0.55 |
| Peak | 3,710 Hz | +5.7 dB | 0.94 |
V-shaped target
Set a preamp of -6.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 86 out of 100, up from 56.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.2 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 250 Hz | -3.4 dB | 0.55 |
| Peak | 3,674 Hz | +6.0 dB | 0.88 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the FiiO FW3 measures across the audible range, against the Harman in-ear target that most listeners prefer in blind tests. Where the line sits above the target that range sounds louder (more bass, brighter treble), below it quieter. The curve is the median of 3 independent measurements, so one odd sample or rig cannot skew it, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: median of 3 measurements from the squig.link databases of arn, ianfann and vsg. Thanks to each of them for publishing their work.
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