The Sennheiser HD 400 PRO open-back studio headphones deliver neutral, precise reference sound for mixing and mastering. Lightweight with velour pads, 120Ω dynamic drivers, angled transducers for wide soundstage and dual cables (straight + coiled) ensure comfort and accuracy during long sessions.
The Sennheiser HD 400 PRO is a professional open-back studio reference headphone engineered for critical mixing, mastering and monitoring in home or professional studios. Its 120Ω dynamic transducers, angled for optimal ear alignment, reproduce a wide, transparent soundstage with low distortion even at high SPLs (110 dB), ensuring your mix translates exactly as intended. The lightweight, open-ear design with soft velour earpads provides exceptional comfort over extended sessions, while the open-back architecture enhances spatial accuracy and natural ambience. Included are both a single-sided coiled cable for studio mobility and a straight cable for portable use, both terminating in a 3.5mm plug (with 6.3mm adapter).
Key Features:
- Neutral, accurate sound reproduction for professional mixing and mastering
- Open-back design with angled 120Ω dynamic transducers for spacious, low-distortion soundstage
- Lightweight construction with velour earpads for all-day comfort
- Dual cables: single-sided coiled (for studio) and straight (for travel)
- High SPL handling (110 dB at 1 kHz / 1 V RMS) with minimal harmonic distortion
- 3.5 mm connector with 6.3 mm adapter included
- Durable, professional-grade build for daily studio use
- Sennheiser HD 400 PRO Studio Reference Headphones
- Coiled Cable
- Straight Cable
- 1/4″ Adapter
- Model: HD 400 PRO
- Type: Open-back, over-ear studio reference headphones
- Transducer Type: Dynamic, 120 Ω impedance
- Wearing Style: Circumaural (over-ear)
- Connection: Wired
- Connectors: 3.5 mm stereo jack (with 6.3 mm screw-on adapter)
- Cables Included:
- 1 x single-sided coiled cable (3 m)
- 1 x straight cable (1.8 m)
- Max Sound Pressure Level: 110 dB (1 kHz / 1 V RMS)
- Frequency Response: 6 – 38,000 Hz (typical for precision monitoring)
- Ear Pads: Soft velour, replaceable
- Weight: Approx. 240 g (without cable)
- Color: Black
