Headphones Sennheiser HD 400 PRO

The Sennheiser HD 400 PRO headphones are a high-quality professional tool designed for composers, musicians, sound engineers, and audio operators who require maximum precision in their work. The open-back acoustic design ensures natural sound wave propagation and creates a wide and transparent soundstage, allowing you to hear the mix exactly as it is meant to be.

At the heart of the model are Sennheiser’s new transducers with advanced diaphragms made from a unique polymer composite. Combined with permanent magnets and a carefully engineered damping system, they deliver clean and detailed sound with well-defined bass and minimal distortion, even at high volume levels. Thanks to this, the HD 400 PRO allow you to work with mixes across an extended frequency range of 6 – 38000 Hz, fully revealing the depth of modern music productions.

The special design of the angled transducers helps create an accurate acoustic zone similar to professional studio systems. This ensures a neutral and balanced sound that does not tire the listener and allows you to work with full confidence in the results.

A key advantage of the model is comfort during long sessions. The lightweight frame is barely noticeable on the head, while the large velour-padded ear cushions comfortably enclose the ears, providing excellent ventilation and isolation from external distractions. The headphones sit securely without creating pressure, remaining comfortable even during hours of studio work.

The model’s practicality is reinforced by its durable build and wear-resistant materials, designed for intensive use. The package includes two cables — a coiled 3 m cable and a straight 1.8 m cable — as well as a 3.5 mm to 6.3 mm adapter for compatibility with different devices. This makes the Sennheiser HD 400 PRO a versatile solution for professional applications.

Features

• Open-back acoustic design
• New transducers with polymer diaphragms
• Wide frequency range of 6 – 38000 Hz
• Low total harmonic distortion (<0.05% at 90 dB)
• Angled transducers for precise sound reproduction
• Lightweight and durable construction
• Velour-padded ear cushions for comfort
• Coiled and straight cables included, 3.5 mm – 6.3 mm adapter