HIFIMAN HE400SE Stealth Magnets Version Open-Back Planar Magnetic Headphones | High Sensitivity & Comfort

Open-Back Planar Sound with Stealth Magnets

Discover a listening experience that emphasizes clarity, spaciousness, and articulation. The HIFIMAN HE400SE uses a planar design where conducting layers span most of the diaphragm, aiming for lower distortion and a broad, accurate response across the audible range. This approach helps voices and instruments feel more immediate, with less veil and more texture in the mix.

Acoustically Invisible Stealth Magnets are shaped to minimize wave diffraction turbulence. The result is a sonic signature that remains faithful to the source, with a sense of openness that can aid in critical listening and genre versatility. If you value precise instrument separation and a natural resonance, these magnets are a noteworthy detail in the design.

Core benefits

• Planar diaphragm design aimed at lower distortion and extended response for a more precise listening experience.
• Stealth Magnets provide acoustically transparent operation to reduce diffraction noise and preserve clarity.
• Durable, dual-sided 3.5mm cable with a 6.35mm adapter for broad compatibility with mixers, interfaces, and players.
• High sensitivity well-suited for low-voltage sources, including portable hi-res players and compact DACs.
• Newly designed, lightweight headband and open-back cups deliver cooler comfort and extended listening without fatigue.

Ideal use scenarios

• Home listening and reference checks where a wide, natural soundstage matters.
• Studio or desktop setups that benefit from accurate transients and detailed mids.
• On-the-go listening with portable devices that benefit from a high-sensitivity driver.

What’s included

The HE400SE ships with a dual-sided 3.5mm cable and a 6.35mm adapter, enabling quick connections to a wide range of devices and setups.

In practice, you may notice a spacious feel around each instrument, clean highs, and a controlled, articulate bass response. The open-back design contributes to an airy atmosphere, while the lightweight headband and cup geometry help keep comfort in play during longer sessions. This combination makes the HE400SE a versatile option for casual listening, creative work, and studio references alike.