Sennheiser HD 400 PRO

Whether at home or in the studio, your mix needs to sound the way listeners will hear it. The HD 400 PRO open studio headphones provide a natural and precise listening experience for fine-tuning your signature sound. Velour ear cushions and an ultra-lightweight design provide the comfort you need for long sessions. Open ear cups and angled transducers ensure a wide and transparent soundstage, making the HD 400 PRO a reliable companion for those who value quality and precision above all else.

Reference-class headphones for project work and professional mixing

The HD 400 PRO's frequency response has been designed to sound unbiased across the entire spectrum, which is particularly evident at the low end. The angled transducer design allows for a unique stereo imaging that reproduces the spatial sound of the mix. In other words: What goes in, comes out. With its reproduction of analytical audio, the HD 400 PRO reference headphones are the perfect tool for everyday work

Open design, open mix

The open earcups provide a wide and transparent soundstage and create the optimal listening position known from high-end recording studios. Artifacts of confined spaces are a thing of the past. These studio headphones do not interpret, but provide neutral transparency - the basis for the best mixes.

Perfect synergy of comfort and precision

Mixing sessions are usually very time-consuming. Thanks to the lightweight design of the HD 400 PRO, you can comfortably concentrate on your project for hours on end. Movable ear cups, velour ear pads and an adjustable headband ensure adaptability and comfort, and hug the shape of your head perfectly. In-house designed 120-ohm transducers are tuned for accuracy and reproduce every detail of your mix. The high-efficiency driver magnet ensures clarity, while its damping system regulates airflow. This ensures deeper bass while mitigating distortion that otherwise compromises sound quality - a difference that professional users will appreciate.

Versatile tool, versatile options

The HD 400 PRO features a detachable coiled cable. A smooth cable is also included for a wider range of uses. A screw-on adapter lets you connect your mixer, audio interface, or any other audio device with a 6.3 mm or 3.5 mm output.

Features:

• A professional tool with neutral sound reproduction
• Lightweight design for all-day use
• Single-sided coiled cable for greater freedom of operation. A smooth cable is also included for broader applications
• Angled transducers, designed for low distortion at high sound pressure levels, provide a spatial and accurate sound image
• Impedance: 120 Ω
• Audio frequency response: 6 Hz to 38 kHz (-10 dB)
• Sound pressure level at 1 kHz: 110 dB (1 kHz / 1 V RMS)
• Distortion factor at 1 kHz: < 0.05 % (1 kHz / 90 dB SPL)
• Coupling to the ear: circumaural
• Connector: 3.5 mm jack plug with 6.3 mm adapter
• Weight: 240 g
• Temperature range (storage): -55 °C to +70 °C (-67 °F to 158 °F)
• Temperature range (operation): -15 °C to +55 °C (5 °F to 131 °F)
• Relative humidity operation: ≤ 90%.
• Acoustic principle: dynamic, open
• Ear cushion material: velour

Specs:

• Color: Black
• Headphone construction: open
• Wearing method: circumaural
• Ear cup: non-foldable
• Impedance: 120 Ω
• Adapter: yes
• cable type: spiral, exchangeable
• Cable routing: one-sided
• Cable Length: 3 m
• Frequency Range from: 6 Hz
• Frequency Range to: 38000 Hz
• Type: Studio Headphone
• Theme: Headphones

Instruction manual / Safety instructions:

• Manual (932.83 KB)

Further links:

• Print View