Pricing and availability
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Price
Average Price: $248
Standard/Professional
$100
$301+
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Budget
Standard
High-end
Price History
Based on price data from 7 merchants for "Sennheiser HD 400 Pro Reference Headphones". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Sennheiser HD 400 Pro Reference Headphones have been designed for the modern producer and engineer who needs precision performance and optimal comfort. The headphones feature high-performance open-back ear cups and specialized polymer diaphragms to deliver a natural, transparent listening experience ideal for meticulous sound editing and mixing.
These headphones recreate the expansive, distortion-free soundstage of a high-end studio control room. This is made possible by the open-back ear cups, which allow you to pinpoint the position of each element in your mix with laser-focused precision.
At the core of the HD 400 PRO are custom-developed 120-ohm transducers that yield stunning clarity, warmth, and bass depth. The powerful drive magnets and innovative damping system minimize distortion for reference-grade accuracy at any volume.
Attention to comfort is evident with plush velour earpads, an adjustable padded headband, and lightweight yet durable components. The single-sided, detachable coiled cable provides plenty of slack, allowing you to move freely while editing or tracking.
Key Features:
- High-performance open-back ear cups for a natural, transparent listening experience
- Specialized polymer diaphragms and 120-ohm transducers for stunning clarity, warmth, and bass depth
- Powerful drive magnets and innovative damping system for minimized distortion
- Plush velour earpads and adjustable padded headband for maximum comfort
- Lightweight yet durable components for longevity and ease of use
- Single-sided, detachable coiled cable for freedom of movement
- Straight cable and 6.3mm screw-on adapter included for flexibility and compatibility with various devices
- Optional accessory kit available for replacement parts.
Owner's manual
Sennheiser HD 400 Pro Reference Headphones User ManualProduct specs
| Type | Wired |
| Open/Closed | Open |
| Fit Style | Circumaural (Around the Ear) |
| Frequency Response | 6Hz-38kHz |
| Impedance | 120 ohms |
| Connectivity | 1/8" plug, 1/4" adapter |
| Cable Type | Coiled, Straight |
| Cable Length | 9.8 ft. (coiled), 5.9 ft. (straight) |
| Detachable Cable | Yes |
| Material | Velour Earpads |
| Weight | 0.52 lbs. |
FAQs
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Are the Sennheiser HD 400 Pro headphones suitable for mixing and mastering?
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Yes, the Sennheiser HD 400 Pro headphones are designed for professional studio use with a flat frequency response, making them ideal for accurate mixing and mastering.
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What is the impedance of the Sennheiser HD 400 Pro headphones, and how does it affect use?
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The Sennheiser HD 400 Pro headphones have an impedance of 120 ohms, which means they are best used with an amplifier or professional audio interface for optimal performance.
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Do the Sennheiser HD 400 Pro headphones come with a detachable cable?
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Yes, the Sennheiser HD 400 Pro headphones feature a detachable cable, providing flexibility and ease of replacement.
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How comfortable are the Sennheiser HD 400 Pro headphones for long sessions?
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The Sennheiser HD 400 Pro headphones are designed with velour earpads and a circumaural fit, offering comfort for extended listening sessions.
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What type of design do the Sennheiser HD 400 Pro headphones have, open-back or closed-back?
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The Sennheiser HD 400 Pro headphones feature an open-back design, which provides a natural soundstage ideal for critical listening environments.
Videos
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Sennheiser HD 400 Pro
Sennheiser HD 400 Pro
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Sennheiser HD 400 Pro - Detailed Review & Audio Tests
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Sennheiser HD 400 Pro - Open Back Studio Headphones - Good for Mixing?
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Best New Sennheiser Studio Headphone for Mixing & Mastering? | HD400 PRO / HD650 / HD6XX Comparison
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Sennheiser HD 400 PRO | Studio Headphones with Ollie Chanin
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Sennheiser HD 400 PRO Headphones | Overview
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Why everyone should own the Sennheiser HD 400 Pro
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Sennheiser HD 400 Pro, best headphones for video
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Reviews
PROS
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Excellent for mixing with a nearly flat frequency response
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Comfortable for long sessions, no ear fatigue
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Open back design allows ambient sound blending, reducing isolation
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Provides a realistic stereo image and sense of phantom center
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Transparent low-end response, less hyped high-end compared to competitors
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Works well with spatial audio software like Dearvr
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High-quality sound across a wide frequency range (12Hz-38kHz)
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Durable build and quality cables included
CONS
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Lacks a protective case for the price point
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Limited portability due to non-folding design
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Open back design may leak sound, unsuitable for recording with sensitive mics
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Comfort may vary for individuals with glasses or larger head sizes
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Sennheiser HD 400 Pro Reference Headphones.
Comparisons
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The HD 400 Pro is noted to have a more professional aesthetic compared to the HD 560S, with differences mainly in cable design and market positioning rather than sound quality.
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The HD 400 Pro's mids have an elevation around 5kHz, leading to a love-hate relationship for detail retrieval, unlike the Beyerdynamic models.
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The HD 400 Pro is compared to the HD 560S, suggesting they share similar sound characteristics with modest bass extension.
Source
Use cases and applications
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EQ presets like Oratory's can tighten and add depth to the HD 400 Pro's response, though improvements in bass are limited.
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Users praise the HD 400 Pro for not just studio work but also movies and gaming, highlighting versatility beyond music production.
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Owners have found these headphones surprisingly effective for music genres requiring bass clarity, such as hardstyle, without compromising overall clarity.
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For live music monitoring, the headphones might not provide an accurate representation of bass-heavy audio, potentially misleading during live broadcast setups.
Source
Features and functionality
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The angled drivers in the HD 400 Pro aid in making panning decisions easier and more meaningful.
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The HD 400 Pro comes with a 3-meter coiled cable, which is a notable addition for professional or home listening settings.
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The headphones have a clear sound, ideal for detail-oriented audio work, but may present a bass-light signature, leading to overcompensation in mixes.
Source
Other
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The HD 400 Pro's focus and detail are ideal for tasks like de-essing and restoration, with a bright-neutral character reminiscent of vintage audio.
Source
User experience
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Owners report that clamp force eases after months of use, especially if stretched on a head statue to improve comfort.
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Owners note that the HD 400 Pro headphones can be worn for hours comfortably due to their lightweight design.
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Some users find the HD 400 Pro's clamping force too strong, especially compared to the HD 599, which offers a more comfortable fit for wider heads.
Source
Build quality
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The HD 400 Pro's cable connection requires twisting to lock, which some find difficult and potentially damaging over time.
Source
Software and compatibility
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It's been suggested that the headphones perform well with high-resolution audio files, even without a high-end amplifier or DAC, achieving impressive sound quality with basic setups like laptops or iPads.
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Users recommend testing the headphones with different interfaces to diagnose potential underpowering issues affecting bass response.
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It's suggested that the GoXLR Mini interface's lack of headphone amp specifications might affect bass performance, despite sufficient volume output.
Source
Critic Reviews
Based on 0 Reviews and 0 Ratings
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Based on how musicians on Equipboard use Sennheiser HD 400 Pro Reference Headphones, it is most commonly used with the following gear.
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