HE 400SHIFI Man 400S 3


Easy to Drive
One of the highest efficiency planar phones in the world! HIFIMAN’s newest HE400S sounds terrific on your smartphone or most any portable audio device.

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.

Long Hours of Comfortable Listening
Innovative headband and specially designed ear pads for remarkable comfort allowing you to enjoy your music for hours on end
Lightweight: Only 350g!

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.


Frequency Response : 20Hz – 35KHz
Sensitivity : 98dB
Impedance : 22 Ohms
Weight : 350g
Cable Length : 1.5 m
Plug : 3.5mm/6.35mm


The Hifiman HE-400S’s build is near identical to that of the HE-400i‚Äôs but with material differences here and there. The headphone has the same scheme as the HE-400i; it’s a portly square chunk of metal and plastic. But whereas the HE-400i is a super glossy bluish-purple on the driver housing, the HE-400S is a semi-glossy light gray. I noted that these choices visually striking appearance on the new luxurious looking color design and how ‘shinny’ the new look was made it different from other headphones currently s in price range and ‘class.’

Just like the 400i, the plastic housing is used in this design. On the 400S, the driver housing, driver attachment arms and the linkage bracket securing the driver to the metal headband suspender are made from quality plastic. The headband is similar in design to all the new Hifiman line. The headband makes the headphone more comfortable and gives it its lighter feel thus making the headphone more comfortable.

The HE-400S includes a new removable cable attachment on the base of the housing. Unlike prior designs using a set of screw on connectors that always ended up twisting the headphone and major improvement over previous design. It is a dual set of 2.5mm plugs without any special connectors, gimmicks, or attachments. The new 2.5MM plugs makes people who like using aftermarket cables a breeze. This eliminated the cable twisting issue and how troublesome it was to remove or attach cables in previous designs.

Despite the fact that it doesn’t include any more retention attachments, the connector is solid. No, your cable won‚Äôt plop and fall out from just walking around and yes it will unplug if you put weight on it if you sit on the cable and pull. This is something the old twisted connector wont do. I’d rather it unplug and fall out then to create a straining force on the headphone frame. I love this plug and commend Hifiman for solving the issue that plagued the prior connectors.