HF400i Feature Change

You spoke and HIFIMAN listened. The popular HE400i is now being shipped with 2.5mm plug-in connectors rather than the traditional "screw-on" type that HIFIMAN has used for years. Performance is identical and there is no change in price.

As inventories in different will be depleted at varying rates, some customers may still receive HE400i with the original connectors. We apologize for any confusion or inconvenience.

Great Sound on the Go

HE400i

Easy-to-Drive Full-size Planer Magnetic Headphone.

Planar Magnetic Headphone

Created by the innovator of the planar magnetic technology, the HIFIMAN HE400i is a high quality, full size planar magnetic headphone created for critical listening at home or in studio. The new generation headphone becomes more lightweight with largely improved sensitivity.

Planar vs. Electrostatic

Planar magnetic and electrostatic drivers are similar in regards to low destoration and high signal input. Compared to the electrostatic driver, the planar magnetic technology uses a more massive diaphragm that is able to move very quickly in a coherent and uniform way. The planar magnetic headphone gives excellent transit response and a sound quality almost equal to that of an electrostatic product.

Breakthrough Innovation

Single-ended planar magnetic driver provides superior soundstage and spatial imaging.

Lightweight - Comfortable

The HE400i is 30% lighter than other full-size planar magnetic designs for increased comfort.

Lively - Agile

Using single-ended drivers, HE400i delivers a Lively soundstage and spatial imaging.

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.

The Lock

• ABS polymer ear cups in a gloss charcoal finish give the HE400i a striking contemporary look.
• Improved pressure pattern is designed to provide best-in-class comfort.
• Specially designed beveled ear pads are made of pleather and velour, which provide both increased comfort and improved sound quality.

High Quality Sound

• Delivering better quality sound than other headphones types.
• Massive diaphragm allows high signal input and flexible bass and treble.
• Very fast response time due to the lightweight diaphragm design.
• Evenly distributed magnetic force for low distortion and reproduction od live sound.

• Impedence: 35Ω
• Sensitivity: 93dB
• Frequency response: 20Hz~35kHz
• Cable length: 1.5m
• Plug: 3.5mm/6.35mm
• Weight: 370g