Sennheiser HD 400 PRO – open-back studio reference headphones with 38 mm dynamic transducers, lightweight design, and angled drivers for low distortion. It provides neutral sound reproduction, flexible cabling, and high comfort for editing, mixing, and mastering. On board, there is a specialized polymer diaphragm, velour earpads, and extensive performance functions.
Sennheiser HD 400 PRO is an environment for sound creation designed for professional use. It features circumaural over-ear design with accurate and spacious soundstage, suitable for studios and creators. Flexible I/O with coiled and straight cables enables a wide range of configurations – including new ones for the Sennheiser ecosystem.
Sound is deeply integrated: 120 ohm impedance for precise audio, wide frequency response, low THD for clarity. Monitoring can be done in real-time – for automatic tuning of sources. The headphones offer German engineering, replaceable parts, and advanced audio options.
KEY FEATURES
- Open-back design for natural sound reproduction
- Lightweight 240 g for extended comfort
- Angled transducers for low distortion at high SPL
- Spacious and accurate soundstage
- Includes 1.8 m coiled and 3 m straight cables
- 3.5 mm jack with 6.3 mm adapter
- Velour earpads for breathability
- Professional tool for editing, mixing, and mastering
TECHNICAL SPECIFICATIONS
- Transducer Principle: Dynamic, open
- Ear Coupling: Circumaural
- Frequency Response: 6 Hz – 38 kHz (-10 dB)
- Impedance: 120 Ω
- Sound Pressure Level (SPL): 110 dB (1 kHz / 1 V RMS)
- Total Harmonic Distortion (THD): < 0.05 % (1 kHz / 1 V RMS)
- Transducer Size: 38 mm
- Connection: Wired
- Cable: Coiled 1.8 m with 3.5 mm jack, straight 3 m with 3.5 mm jack
- Connector: 3.5 mm jack plug with 6.3 mm adapter
- Ear Pad Material: Velour
- Weight (without cable): 240 g
- Operating Temperature: -5 °C to +45 °C
- Storage Temperature: -20 °C to +70 °C
- Relative Humidity: < 90%
