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This hifiman open back planar magnetic headphones review focuses on the HE400SE Stealth Magnets Version. These over-ear headphones use a planar magnetic driver design, which covers the diaphragm with conductive layers to lower distortion. They also feature acoustically invisible stealth magnets that reduce wave diffraction turbulence. The result is a pure, accurate, and full-range sonic output. We look at how these specific technical choices define the listening experience for you. The build includes a lightweight headband and durable connections. This spec-based look helps you decide if this wired audio solution fits your needs.
- Planar magnetic driver with conductive layers for lower distortion
- Acoustically invisible stealth magnets reduce wave diffraction
- Open-back design for a natural soundstage
- High sensitivity suitable for low-voltage portable sources
- Dual-sided 3.5mm cable with 6.35mm adapter included
Good fit for
You will appreciate these headphones if you are an audiophile or work in a studio setting. The high sensitivity makes them a perfect match for low-voltage sources, such as portable hi-res audio players. The open-back design suits listeners who want an accurate, full-range sound without isolation. The lightweight headband ensures comfort for long sessions, even in warm weather. If you prioritize technical accuracy and durability in a wired setup, this model aligns with your requirements.
Who can skip it
You should look at another option if you need wireless connectivity. These headphones are wired only, requiring a physical cable connection. They also lack noise isolation due to the open-back design. If you plan to use them in noisy environments or need to block out external sound, this design will not work for you. Additionally, the 13.8-ounce weight may feel substantial compared to lighter dynamic models. If you prefer compact, portable, or sealed designs, consider alternatives.
Verdict
The HE400SE offers accurate, full-range sound through its planar magnetic drivers and stealth magnets. It is a strong choice for wired listening on portable or desktop setups.
Key specs explained
Driver: Planar Magnetic
This design uses conductive layers across the diaphragm to lower distortion significantly. You get cleaner audio with fewer artifacts compared to conventional dynamic drivers. This benefits listeners who prioritize accuracy and detail. It is ideal for critical listening sessions where sound integrity matters most.
Back Design: Open-Back
Open-back designs allow air to flow through the ear cups. This creates a wider, more natural soundstage. You will experience less pressure on your ears. This suits home listening rather than noisy environments. It offers a more realistic spatial audio experience compared to closed-back models.
Connection: Wired
These headphones connect via a physical cable, ensuring zero latency and no battery needs. You get consistent power and signal quality without interference. This is perfect for studio work or high-fidelity music. It eliminates the need for charging, offering reliable performance for extended listening periods.
Fit: Over-Ear
Over-ear designs fully enclose your ears. This provides better sound isolation and comfort for long sessions. You avoid the fatigue associated with on-ear models. This fit is suitable for audiophiles and studio use. It ensures a secure seal for accurate bass response and immersive audio.
Design and Build Overview
According to the listing, the HIFIMAN HE400SE uses an over-ear fit with an open-back design. This layout allows sound to escape the rear, creating a natural, spacious soundstage. You should expect a more airy listening experience, which suits critical listening in quiet rooms. The headphones are wired, connecting via a dual-sided high-performance 3.5mm cable. A 6.35mm adapter is included, ensuring compatibility with professional audio gear and standard home setups. The casing is newly designed to protect the drivers, enhancing durability against daily wear and environmental factors. This robust construction supports long-term use for studio work or extended listening sessions.
The physical dimensions are 12 inches in length, 10.5 inches in width, and 7.09 inches in height. The unit weighs 13.8 ounces. This weight distribution, combined with the adjustable lightweight headband, aims to keep your ears cool and comfortable during hours of use. The listing notes the headband design helps maintain comfort even in warm weather. You get the product in silver or black finishes. These neutral colors fit well into studio environments or home audio setups without drawing unnecessary attention. The build focuses on functional durability and acoustic transparency rather than flashy aesthetics. You can rely on the sturdy casing to protect the planar magnetic drivers during transport or daily handling.
Setup and Everyday Use
Setup is straightforward because these HIFIMAN HE400SE headphones rely on a wired connection. You receive a dual-sided high-performance 3.5mm cable. This cable includes a 6.35mm adapter for broader device compatibility. You can plug the headphones directly into your audio source without pairing or charging. The lack of wireless components simplifies the process significantly.
The listing notes high sensitivity. This specification means the headphones work well with low-voltage sources. You can connect them to portable hi-res audio players without needing a separate, powerful amplifier. This makes them practical for mobile listening setups where power is limited. The open-back design requires a quiet environment. Sound escapes the rear, so it does not isolate you from room noise. This setup suits critical listening in controlled spaces rather than noisy commutes.
Daily use involves wearing the over-ear fit. The listing highlights a newly designed adjustable lightweight headband. It aims to keep your head cool during long sessions. The product weighs 13.8 ounces. The dimensions are 10.5 inches wide, 7.09 inches high, and 12 inches long. The casing protects the drivers for enhanced durability. You can expect comfortable use for hours, even in warm weather. The planar magnetic driver and stealth magnets reduce distortion. This results in accurate, full-range audio output. You get a clear signal that reflects the source material closely. The wired connection ensures consistent performance without latency or battery concerns.
Before You Buy This Planar Model
Since these HIFIMAN HE400SE headphones are open-back and wired, you need to consider your listening environment carefully. Open designs leak sound and let ambient noise in, so they suit quiet rooms better than noisy offices. The wired connection means you must check your device has a standard 3.5mm jack or use the included 6.35mm adapter. Because the listing notes high sensitivity, these headphones work well with portable hi-res players or low-voltage sources. You do not need batteries or Bluetooth adapters. For upkeep, keep the stealth magnets and planar diaphragm free from dust. The lightweight headband helps with comfort, but ensure your head size fits the adjustable range. Among the 1 options here, these are best for critical listening at home rather than on the go. You should pair them with a stable, quiet source to fully utilize the low distortion and accurate output provided by the planar magnetic drivers.
Check before you buy
- Confirm your listening space is quiet enough for open-back leakage.
- Check if your audio source has a 3.5mm or 6.35mm jack.
- Ensure your device supports the high sensitivity of these planar drivers.
- Verify the adjustable headband fits your head size comfortably.
- Plan for a stable, low-noise environment for critical listening.
HIFIMAN Open-Back Planar Magnetic Headphones
Best for: Audiophiles seeking low-distortion planar audio
- Connectivity
- Wired, 3.5 mm, 6.35 mm adapter
- Form Factor
- Over-Ear
- Back Design
- Open-Back
- Driver
- Planar Magnetic
- Use
- Audiophiles, Studio
- Ear Style
- Stereo
The HIFIMAN HE400SE uses planar magnetic drivers with stealth magnets to reduce distortion. Its open-back design and over-ear fit suit audiophiles and studio work. High sensitivity matches low-voltage sources. The wired connection ensures stable audio. Weighing 13.8 ounces, it offers a comfortable, lightweight build for extended listening sessions.
- Planar magnetic driver design lowers distortion
- Stealth magnets reduce wave diffraction turbulence
- High sensitivity suits portable hi-res players
- Open-back design for natural soundstage
- Lightweight headband for extended comfort
- 13.8-ounce weight adds bulk compared to lighter models
- Wired connection limits mobility
- Open-back design lacks noise isolation
- You prioritize low distortion in planar drivers
- You need high sensitivity for portable sources
- You want an open-back soundstage
- You require wireless connectivity
- You need noise isolation for noisy environments
- You prefer ultra-lightweight under-ear designs
Verdict: HIFIMAN HE400SE Open-Back Planar delivers accurate, full-range audio through its stealth magnet design. It fits listeners who value low distortion and high sensitivity for portable or studio use.
Specifications side by side
| Spec | HIFIMAN Open-Back Planar Magnetic Headphones |
|---|---|
| Connectivity | Wired, 3.5 mm, 6.35 mm adapter |
| Form Factor | Over-Ear |
| Back Design | Open-Back |
| Connection | Wired |
| Driver | Planar Magnetic |
| Fit | Over-Ear |
| Use | Audiophiles, Studio |
| Ear Style | Stereo |
| Dimensions | 12 × 10.5 × 7.09 inches |
| Weight | 13.8 ounces |
| Color | Silver,Black |
| Model | He400SE |
Frequently asked questions
Are HIFIMAN HE400SE headphones comfortable for long listening sessions?
The HE400SE uses an over-ear fit design that surrounds your ears. This style helps distribute weight evenly across your head. The unit weighs 13.8 ounces, which is moderate for this class. You should find the cushioning supports extended use without excessive pressure on the jawline.
What size are the HIFIMAN HE400SE headphones when folded?
The headphones measure 12 inches in length, 10.5 inches in width, and 7.09 inches in height. These dimensions indicate a substantial frame that does not collapse into a compact shape. You will need adequate space in your bag to store them safely during transport.
Do HIFIMAN open-back planar headphones work with mobile phones?
Yes, they work with mobile phones via a wired connection. You receive a dual-sided 3.5mm cable for direct audio input. A 6.35mm adapter is also included for devices with larger jack ports. You do not need Bluetooth pairing or internal batteries to use them with your phone.
What colors are available for the HIFIMAN HE400SE model?
The listing specifies Silver and Black color options for this model. You can choose the finish that best matches your personal preference or desk setup. These are the only two color variants mentioned in the current product data for this specific open-back planar design.
Is the HIFIMAN HE400SE suitable for studio monitoring?
The product data lists studio use as a primary application. The planar magnetic driver design aims for low distortion and high sensitivity. This accuracy helps you hear subtle details in your mix. The open-back design also provides a natural soundstage, which is beneficial for critical listening tasks.
How does the open-back design affect sound isolation?
Open-back designs allow sound to escape from the rear of the ear cups. This means you will not get passive noise isolation from external sounds. You should use these headphones in quiet environments where ambient noise is minimal to ensure an undisturbed listening experience.