Headphones · Open-back · Planar magnetic
HIFIMAN HE400se
All HIFIMAN · MSRP $109
The HE400se is an open-back planar magnetic headphone with a 32-ohm impedance and 20 Hz–20 kHz frequency response. At $109, it represents HIFIMAN's entry point into planar magnetic technology.
Specifications
| Frequency response | 20 Hz – 20 kHz |
| Sensitivity | 91 dB |
| Impedance | 32 Ω |
| Weight | 385 g |
As stated by the manufacturer — not community data.
Will it drive? · On paper
A dongle is enough
A phone's own output runs out early; a small USB DAC/amp gives it full level and headroom.
| Needs, for 110 dB peaks | 1.6 V · 79 mW |
| Phone or laptop (≈0.70 V, 20 mW) | Runs short |
| Dongle DAC/amp (≈2.0 V, 120 mW) | Enough |
Worked out from the stated 91 dB/mW and 32 Ω — not a listening test. DAC/amps on the shelf →
Community score
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