Sennheiser HD 400 PRO — Open-Back Studio Reference Headphones
HD 400 PRO Overview
The Sennheiser HD 400 PRO is an open-back reference headphone built for professional studio applications including mixing, mastering, and critical editing. At the core of its design are angled transducers that contribute to a wide, accurate soundstage, paired with 120-ohm drivers engineered for precise, neutral sound reproduction. The result is a listening tool that prioritizes accuracy over coloration, making it well-suited for audio engineers and producers who require reliable reference monitoring. The HD 400 PRO is a strong choice for studio professionals, post-production engineers, and content creators who depend on honest, repeatable playback.
The open-back architecture allows for natural acoustic transparency, supporting extended critical listening sessions where spatial accuracy and detail retrieval are essential to the workflow.
Key Features
- Open-Back Design — Provides natural acoustic transparency and a wide soundstage suited for critical listening and reference monitoring
- Angled Transducers — Positioned to replicate a more natural speaker-listening experience, contributing to accurate stereo imaging
- 120-Ohm Drivers — High-impedance drivers optimized for use with professional studio interfaces and headphone amplifiers
- Neutral Sound Reproduction — Tuned for flat, uncolored playback to support accurate mixing and mastering decisions
- Wide Soundstage — Engineered transducer placement delivers spatial accuracy critical for stereo and immersive audio work
- Professional Build — Designed for the demands of studio environments where consistent, long-term performance is required
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