Overview

The HIFIMAN HE400se is an open-back planar magnetic headphone that has redefined what is possible at the budget end of the planar magnetic market, delivering the speed, detail, and low distortion of planar technology at a price previously reserved for entry-level dynamic headphones. It features a full-size planar magnetic driver with a thin diaphragm and stealth magnets derived from HIFIMAN's more expensive designs, producing a clean, detailed sound with surprisingly good bass extension, a transparent midrange, and an open, airy treble. The planar driver delivers noticeably faster transients and lower distortion than comparably priced dynamic headphones, particularly evident in the bass region where the tight, controlled low end avoids the bloat and slow decay that budget dynamic drivers often exhibit. The open-back design creates a natural soundstage with good width and imaging, providing a convincing spatial presentation that enhances the listening experience for music and multimedia alike. At 25 ohms, the HE400se is fairly easy to drive from most sources, though its lower sensitivity means it benefits from an audio interface or amplifier with adequate voltage swing. The headband uses a simple suspension design, and the fabric earpads are reasonably comfortable. Build quality is functional with lightweight plastic construction. These headphones are an outstanding value for budget-conscious audiophiles and music producers entering the planar magnetic world. The lightweight plastic build feels less premium than the price might suggest, and long-term durability is a common concern among owners.

Headphones

A budget planar magnetic headphone that redefines what is possible at its price, delivering the speed, detail, and low distortion of planar technology with stealth magnets derived from flagship designs.

Instrument Details

$109 Beginner
Brand HiFiMAN
Type Open-Back Planar Magnetic Headphones
Made In China
Year 2021
4.8 1 vote

AI Reviews

4.8 /5

The HE400se is a watershed moment for entry-level monitoring, bringing the technical prowess of planar magnetic drivers to a price point once dominated by basic dynamic cans. By incorporating trickle-down 'Stealth Magnet' technology, HiFiMAN has achieved a level of transparency and transient speed that is frankly startling for around $100. The frequency response is impressively linear; the bass is tight and extends deep without bloating, while the mids remain clear for vocal tracking and critical EQ work.

Ergonomically, the padded headband is a significant improvement over older budget designs, though the 390g weight might fatigue some users during marathon mixing sessions. The biggest trade-off is power requirements. Despite the low impedance, the 91dB sensitivity means a standard laptop jack won't cut it"you'll need a dedicated headphone amp to reveal its full dynamic range and avoid a thin, compressed sound. Additionally, the included cable is notoriously stiff and feels like a budget afterthought.

For the home studio producer or the budding audiophile, this is the ultimate gateway drug. It offers a surgical perspective on audio that dynamic drivers in this bracket simply can't match. While it lacks the ultimate 'slam' of high-end models, its value-to-performance ratio is currently unrivaled in the open-back market.

Category Ratings

Headphones
4.8
Feb 15, 2026
AI-Generated Review Generated via Google API. This is an automated evaluation, not a consumer review. Learn more
HIFIMAN HE400se Screenshot

Added: Feb 12, 2026

store.hifiman.com/index.php/he400se.html

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