HiFiMAN HE-400I Over Ear Full-size Planar Magnetic Headphones

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The HIFIMAN HE-400i is a high quality, full-size planar magnetic headphone designed for critical listening in the home or studio. At little more than twelve ounces, HE-400i is 30% lighter than comparable planar magnetic headphones allowing the listener to comfortably enjoy music for hours on end. In addition, a newly-designed headband and beveled hybrid ear pads provide added comfort as well as improved sound quality. Using single-ended drivers, HE-400i delivers a lifelike soundstage and spatial imaging. Its increased efficiency of 93dB allows it to be driven with a modest size amplifier or can even be used with a portable audio player or smartphone. A premium cable is included comprised of Crystalline metal with Oxygen-free copper and silver. HE-400i features ABS polymer ear cups in a gloss charcoal finish.

Newest Iteration with 3.5mm connectors and steel reinforced yoke

Hifiman today is widely regarded as one of the leading designers and manufacturers of high performance headphones and portable audio devices. Renowned for its critically-acclaimed Planar-Magnetic headphones that feature state-of-the-art driver technology.

Impedance: 35 Ohm
Sensitivity: 93dB
Weight: 370g
Frequency Response: 20Hz-35KHz
Cable: 1.5m removable 3.5mm connectors
Accessories: Display Box, 1/4" Adapter
Type: Open-Back

Hifiman HE400i Planar Magnetic Open-Back Headphones

The HIFIMAN HE-400i is a high quality, full-size planar magnetic headphone designed for critical listening in the home or studio. At little more than twelve ounces, HE-400i is 30% lighter allowing the listener to comfortably enjoy music for hours on end. In addition, a newly-designed headband and beveled hybrid ear pads provide added comfort and improved sound quality. Its increased efficiency of 93dB allows it to be driven with a modest size amplifier or portable audio player or smartphone.

Easy-to-Drive Full-Size Planar Magnetic Headphones created for critical listening at home, in the studio, or on the go.
Improvements in the new generation result in 30% weight reduction and increased sensitivity.
Planar Magnetic offer extremely low distortion and high signal input as well as excellent transient response.
Cable and Connections: Dual 3.5mm connections with 1.5m removable cable
2018 Product updates: Steel reinforced Headphone Yoke for additional rigidity and support.

The new generation headphone results in additional weight saving and improved sensitivity.


Planar Magnetic Headphones Created by the innovator of the planar magnetic technology, the Hifiman HE-400i is a high quality, full-size planar magnetic headphone created for critical listening at home or in the studio. The new generation headphone results in additional weight saving and improved sensitivity.	Striking Contemporary Design åÊ ABS Polymer ear cups in a gloss charcoal finish give the HE400i a striking and contemporary look. Improved pressure pattern is designed to provide class leading comfort. Specially designed beveled ear pads are made of leatherette and velour, which provide both increased comfort and improved sound quality. åÊ	High Quality Sound åÊ Planar Magnetic Headphone technology delivers superior sound quality over their traditional rivals. Massive diaphragm allows high signal input and flexible bass and treble. Very fast response time due to the light weight diaphragm design. Evenly distributed magnetic force for low distortion and reproduction of live sound. åÊ

Using single-ended drivers, the HE400i delivers a lively sound stage and spatial imaging.


Lively - Agile Using single-ended drivers, the HE400i delivers a lively sound stage and spatial imaging. Increased efficiency of 93dB allows the HE400i to be driven with a modest size amplifier, portable audio player, smartphone, tablet, or computer.	Headphone Specifications: åÊ Impedance: 35 Ohms Sensitivity: 93 dB Weight: 370g Frequency Response: 20Hz - 35KHz Cable Length: 1.5m Plug: 3.5mm Cable type: Removable 3.5mm Driver Type: Planar Magnetic Headphone Type: Open-Back åÊ	HE-400i Product Updates (2018) The Hifiman HE-400i has been revised in its most recent iteration with the following changes: 2017-2018: Switched from screw on 2.5mm connectors to 3.5mm plug-in connectors. 2018-2019: Reinforced yoke: Steel reinforcement molded inside the yoke results in additional rigidity while maintaining the same great look.

A premium cable is included comprised of Crystalline metal with Oxygen-free copper and silver.


Crystalline Metal 3.5mm Cable A premium cable is included comprised of Crystalline metal with Oxygen-free copper and silver. åÊ Cable Length: 1.5m (4.9' Feet) Cable Connection: 3.5mm Included Accessory: 1/4" to 3.5mm Adapter åÊ	Newly-designed Headband Updated and newly-designed headband features improved pressure pattern. Perfect for those long listening sessions. Made of Leatherette and perforated for enhanced comfort.	Velour / Leatherette Earcups At little more than twelve ounces, HE-400i is 30% lighter than comparable planar magnetic headphones allowing the listener to comfortably enjoy music for hours on end. In addition, a newly-designed headband and beveled hybrid ear pads provide added comfort as well as improved sound quality.