The HIFIMAN HE4XX ranks #23 out of 249 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: HIFIMAN
Prices on this page were last checked October 12, 2026 at 4:13 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.
As an eBay Partner, we may be compensated if you make a purchase.
#23 HIFIMAN HE4XX Discontinued eBay
Pros: A planar classic that scores 89 on the Harman scale with a 1.92 dB spread, with mids and treble within about 2 dB of target for an open, natural sound.
Cons: Discontinued, so it is mainly found used. Sub-bass falls 6 dB below target by 42 Hz, as is common for open planars, so deep bass lacks weight, and a 6.4 dB dip near 9.6 kHz softens some treble detail.
| Released | 2017 (9 years ago) |
|---|---|
| Back | Open |
| Connection | Wired |
| Deviation From Target | 1.92 dB standard deviation |
| Driver Type | Planar |
| Drivers | 1 x planar magnetic |
| Form Factor | Over-ear |
| Frequency Response | 20Hz - 35kHz (Manufacturer specified) |
| Harman Preference Score | 89 (measured by oratory1990, via AutoEQ) |
| Impedance | 35 ohms |
| Sub-bass Extension | Falls 6 dB below target at 42 Hz (-7.1 dB at 30 Hz) |
| Tonal Tilt | +0.10 (negative is warmer, positive brighter) |
| Weight | 0.8 lbs (370 g) |
EQ preset to match the Harman target
Set a preamp of -6.4 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 | +7.2 dB | 0.70 |
| Peak | 88 Hz | -2.7 dB | 0.39 |
| Peak | 1,803 Hz | +3.7 dB | 2.74 |
| Peak | 1,012 Hz | -2.3 dB | 2.72 |
| Peak | 5,235 Hz | +3.6 dB | 5.38 |
| High shelf | 10,000 Hz | -6.1 dB | 0.70 |
| Peak | 9,477 Hz | +3.9 dB | 2.22 |
| Peak | 2,989 Hz | -1.9 dB | 3.89 |
| Peak | 121 Hz | +0.6 dB | 2.01 |
| Peak | 70 Hz | -0.7 dB | 2.82 |
- Reviews, Comparisons and Sound Samples