Planar Magnetic Open Headphones
A New Era of Planar Technology
Superb Hi-Fi Quality
HE400S delivers all the lifelike clarity, detail, extended bass and wide sound stage
that audiophiles have come to expect from HIFIMAN.
Easy to Drive
One of the highest efficiency planar headphones in the world! HIFIMAN’s newest HE400S sounds terrific on your smartphone or most any portable audio device.
Long Hours of Comfortable Listening
Why Choose A Dynamic Headphone…When You Can have Planar?
Dynamic headphones utilize conductors that vibrate in limited areas of the diaphragm. Result is that a large percentage of the diaphragm cannot be directly driven by those conductors.
Planar headphones have conductive layers over almost all of the diaphragm. Evenly driven by these conductors, result is significantly lower distortion than conventional dynamic headphones.
1. ¼” (6.35 mm) headphone adapter
2. Headphone Cable (1.5 meter or 4.9 Feet; 3.5mm plug)
3. Earpads：1 pair (on the headphone)
Frequency Response : 20Hz – 35KHz
Sensitivity : 98dB
Impedance : 22 Ohms
Weight : 350g
Cable Length : 1.5 m
Plug : 3.5mm/6.35mm