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HD 400 PRO

Name: HD 400 PRO
Brand: Sennheiser
SKU: 700047
Price: 229 GBP
Availability: InStock

Article No. 700047

Open-back studio headphones with angled drivers for accurate, spacious sound and long-session comfort.

The HD 400 PRO is a pair of open-back studio headphones engineered to reveal every detail in your mix. With a wide frequency response, angled transducers, and a neutral, transparent sound signature, the HD 400 PRO delivers the clarity and spatial accuracy audio professionals rely on. Lightweight and supremely comfortable, it stays out of the way so you can stay in the zone.

Features¹¹

Open-back design for natural stereo image and accurate monitoring
Angled transducers replicate the optimal speaker setup
Neutral, balanced sound signature for mix clarity
Wide frequency response: 6 Hz – 38 kHz
Lightweight, comfortable design with soft velour ear pads
Detachable coiled cable (3m) with 6.3 mm adapter included
Designed for mixing, tracking, and critical listening
Replaceable earpads and components for long-term use
120 dB SPL / 120 Ohm impedance—compatible with studio gear
Engineered in Germany, assembled in Europe
Backed by Sennheiser’s 2-year warranty

Top Specs

Max. sound pressure level110 dB (1 kHz / 1 V RMS)
Transducer typeDynamic
Wearing styleOver-ear
ConnectionWired
Connectors3.5mm

Studio Monitoring Made Simple

HD 400 PRO headphones deliver a balanced, spacious sound signature that helps you make accurate mix decisions. Designed for creators and engineers working in professional or home studios, these headphones offer an open-back design, angled drivers for natural imaging, and a lightweight build that keeps you focused through long sessions.

Natural Sound, Accurate Results

Angled transducers create a stereo field that mimics a perfectly placed set of studio monitors. You hear your mix with depth, width, and placement that translates reliably across playback systems—helping you catch issues before they leave the DAW.

Comfort Without Compromise

At just 240 grams, the HD 400 PRO headphones are built for hours of uninterrupted use. Soft velour ear pads and a flexible headband reduce pressure and heat buildup, so you can stay immersed in the mix—not distracted by fatigue.

Purpose-Built for Project Studios

From podcasting and content creation to full production workflows, the HD 400 PRO headphones give you reference-grade sound without excess. It’s the ideal step up for creators ready to monitor with intention—and deliver work with confidence.