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🎧 HiFiMAN HE400se: The Gateway to Planar Perfection

Unlock the next tier of high-fidelity audio. The HiFiMAN HE400se is an open-back, planar magnetic headphone engineered for audiophiles seeking unparalleled clarity and a massive, lifelike soundstage. Utilizing advanced Stealth Magnet technology, these headphones deliver lightning-fast transient response, pinpoint instrument separation, and zero distortion. Experience desktop-level resolution that traditional dynamic drivers simply cannot match.

Secure Your Audio Upgrade

📦 The Vault Addition

Brand new, genuine HiFiMAN stock ready for immediate UK dispatch.

HiFiMAN HE400se Planar Headphones
Detachable Audio Cable (1.5 Meters)
6.35mm (1/4") Desktop Amp Adapter
Premium Hybrid Velour/Leatherette Ear Pads
Factory retail packaging & authentication

⚡ Why Go Planar Magnetic?

The secret to unlocking desktop-level acoustic realism.

Lightning Fast Transients: Planar diaphragms react instantly, capturing micro-details dynamic drivers miss.
Vast Soundstage: The open-back design allows sound to breathe, creating a massive, out-of-head 3D stage.
Zero Distortion: Flat acoustic architecture ensures pure, uncolored sonic accuracy across the entire frequency range.

🧲 Stealth Magnets Advanced magnet architecture allows sound waves to pass through without generating interference, radically reducing wave diffraction.

🌬️ Open-Back Stage The open-cup acoustic design drastically expands spatial imaging, offering an immersive, concert-like listening experience.

🎧 Hybrid Comfort Plush ear pads feature breathable velour against the skin to prevent heat, paired with a solid leatherette outer ring to focus the bass.

🔌 Universal Ports Features highly durable, standard dual 3.5mm connectors on the earcups, making aftermarket balanced cable upgrades a breeze.

📋 Core Technical Specifications

Every item is stored in our climate-controlled UK facility and packed securely prior to dispatch.

Driver & Acoustic Architecture:

• Driver Type: Planar Magnetic
• Magnet System: Acoustically Transparent Stealth Magnets
• Enclosure: Open-Back
• Earpad Design: Angled Hybrid (Velour + Pleather)

Performance & Dimensions:

• Frequency Response: 20Hz - 20kHz
• Impedance: 25 Ohms
• Sensitivity: 91dB
• Weight: 385g
• Cable Length: Approx. 1.5 Meters

Reliable Trove: Premium Service Assured

🏆 Curated Hi-Fi Audio Specialist | 🇬🇧 Local UK Stock | 🚚 Fast Tracked Shipping
🛡️ 30-Day Hassle-Free Returns | 🛠️ Expert Post-Purchase Setup Support

⚡ Power Your Setup

Due to their 91dB sensitivity, planar drivers require high-quality amplification to reach their full potential. To exploit the absolute limits of resolution and dynamic range hidden inside the HE400se, navigate back into the full Reliable Trove boutique to browse our handpicked collection of high-resolution Digital Audio Players (DAPs) and powerful desktop/portable DAC/Amps.

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