The HIFIMAN RE400 ranks #57 out of 68 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: HIFIMAN
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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#57 HIFIMAN RE400: $19.99 Amazon eBay
Pros: A very low price makes it an easy backup pair or first wired earphone. The single 8.5mm dynamic driver, 32 ohm impedance and 102 dB/mW sensitivity work fine straight from a phone or laptop. Crinacle’s measurement shows a slightly bright tilt of about 0.6 dB, which gives a lean, light presentation for those who dislike bass-heavy sound.
Cons: A preference score of 60 with a 3.29 dB deviation from the target means the response is quite uneven, so some instruments and vocals will sound colored. There is no built-in microphone, so it cannot take calls. The KZ ATE and SoundMAGIC E50C are rated higher at a similar price.
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 3.29 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 8.5mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 60 (measured by crinacle, via AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 102 dB/mW |
| Tonal Tilt | +0.63 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.0 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 | +6.0 dB | 0.70 |
| Peak | 3,850 Hz | +7.0 dB | 2.19 |
| Peak | 170 Hz | -2.3 dB | 0.43 |
| Peak | 2,033 Hz | -3.6 dB | 1.58 |
| Peak | 801 Hz | +1.9 dB | 1.59 |
| High shelf | 10,000 Hz | +1.7 dB | 0.70 |
| Peak | 6,033 Hz | -4.6 dB | 6.00 |
| Peak | 4,799 Hz | +2.1 dB | 4.73 |
| Peak | 3,186 Hz | +0.9 dB | 6.00 |
| Peak | 3,794 Hz | -1.0 dB | 6.00 |
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