HIFIMAN HE400se – Special Edition Planar Magnetic Headphones

Key Features

• Open-back planar magnetic headphones
• Advanced Stealth Magnet Technology
• Wide frequency response: 20Hz – 20kHz
• Low impedance (25Ω) for easy drivability
• Lightweight design (390g) for long sessions
• Optimized headband for improved comfort
• Beveled ear pads for better fit & airflow
• Dual-sided 3.5mm detachable cable system

Affordable Entry into Planar Magnetic Audio

The HIFIMAN HE400se is designed to deliver high-quality planar magnetic sound at an accessible price, making it the perfect entry point for audiophiles.

Enjoy clean, accurate, and detailed audio without the premium price tag.

Planar Magnetic Technology – Superior Accuracy

Unlike traditional dynamic drivers, planar magnetic headphones:

• Drive the entire diaphragm evenly
• Reduce distortion significantly
• Improve sound clarity and accuracy

The HE400se delivers precise, natural sound with excellent balance.

Stealth Magnet Technology – Pure Sound Performance

HIFIMAN’s advanced magnet design:

• Minimizes wave interference
• Reduces diffraction and distortion
• Preserves sound integrity

Resulting in clean, full-range audio with enhanced detail.

Easy to Drive – Perfect for Everyday Use

With 25Ω impedance and 91dB sensitivity, the HE400se:

• Works with smartphones, tablets, and laptops
• Does not require a powerful amplifier
• Delivers high-quality sound on the go

Open-Back Design – Spacious Soundstage

The open-back construction provides:

• Wide, airy soundstage
• Natural instrument separation
• Immersive listening experience

Ideal for home listening and music enjoyment.

Comfortable for Long Listening Sessions

• Lightweight construction (390g)
• Adjustable headband for better fit
• Breathable, beveled ear pads

Designed for hours of comfortable listening.

Durable & Flexible Connectivity

• Dual-sided 3.5mm connectors
• Detachable cable for easy replacement
• Includes 6.35mm adapter for hi-fi systems

Specifications

• Frequency Response: 20Hz – 20kHz
• Impedance: 25Ω
• Sensitivity: 91dB
• Weight: 390g

What’s in the Box

• HIFIMAN HE400se Headphones
• Dual-sided 3.5mm cable
• 6.35mm adapter

Start Your Planar Journey

The HIFIMAN HE400se offers excellent performance, comfort, and value, making it one of the best beginner planar magnetic headphones available.