Sennheiser HD 400 PRO Instruction Manual

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Year 2021

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Sennheiser HD 400 PRO Specification

The Sennheiser HD 400 PRO is a professional-grade open-back studio reference headphone designed to deliver accurate sound reproduction for audio professionals and enthusiasts. At the core of its performance is a pair of 120-ohm transducers engineered for precision and clarity, enabling a neutral sound profile that aids in critical listening and mixing tasks. The headphones feature a frequency response ranging from 6 Hz to 38 kHz, ensuring comprehensive coverage of both the audible and sub-audible spectrum to capture every nuance of the audio.

The open-back design facilitates a natural listening environment by allowing air to flow through the ear cups, enhancing spatial sound reproduction and providing a broader soundstage. This design contributes to reduced ear fatigue during extended sessions, making the HD 400 PRO suitable for long hours of studio work. With a lightweight construction, the headphones weigh approximately 240 grams, offering comfort without compromising durability. The adjustable headband and velour ear pads ensure a secure yet comfortable fit, accommodating a variety of head sizes.

Connectivity is established via a detachable coiled cable, which extends from 1.5 meters to 3 meters, providing flexibility and ease of movement within the studio environment. A 6.3 mm stereo jack adapter is included, allowing for compatibility with a range of professional audio equipment. The HD 400 PRO's design not only focuses on acoustic performance but also on robust build quality, making it a reliable tool for both studio and personal use. These headphones are optimized for high-resolution audio playback, making them an ideal choice for those seeking precision in sound monitoring and production.

Sennheiser HD 400 PRO F.A.Q.

How do I properly connect the Sennheiser HD 400 PRO to my audio interface?

Connect the Sennheiser HD 400 PRO using the included 3.5mm cable. If your audio interface has a 6.3mm (1/4 inch) output, use the included 3.5mm to 6.3mm adapter to ensure a secure connection.

What is the best way to clean and maintain the ear pads of the Sennheiser HD 400 PRO?

To clean the ear pads, gently wipe them with a damp cloth. Avoid using harsh chemicals or soaking them in water. Regular cleaning will help maintain the material and comfort.

Why is there no sound coming from my Sennheiser HD 400 PRO headphones?

Check the cable connections to ensure they are securely plugged in. Test the headphones with another device to rule out issues with the original audio source.

How can I replace the ear pads on the Sennheiser HD 400 PRO?

To replace the ear pads, gently pull them away from the ear cups. Align the new pads with the mounting posts and press firmly until they click into place.

What should I do if my Sennheiser HD 400 PRO has a loose headband?

Inspect the headband joints for any visible damage. If the headband is adjustable, ensure it's set to the correct size. If the issue persists, contact Sennheiser support for assistance.

How do I store the Sennheiser HD 400 PRO to prevent damage?

Store the headphones in a protective case or on a headphone stand. Avoid exposing them to extreme temperatures or moisture, and ensure the cable is not tightly wound or kinked.

Can I use the Sennheiser HD 400 PRO for gaming?

Yes, the HD 400 PRO can be used for gaming. Ensure to connect it to a suitable audio output on your gaming device or use an external DAC for enhanced audio performance.

What is the impedance of the Sennheiser HD 400 PRO, and how does it affect my listening experience?

The Sennheiser HD 400 PRO has an impedance of 120 ohms, which means it may require a more powerful audio source or amplifier to achieve optimal sound levels compared to lower-impedance headphones.

How can I reduce cable noise when using the Sennheiser HD 400 PRO?

Ensure the cable is not in contact with hard surfaces or clothes that might cause microphonic noise. Consider using a clip to secure the cable and minimize movement during use.

Are the Sennheiser HD 400 PRO headphones suitable for outdoor use?

While the HD 400 PRO can be used outdoors, they are designed for studio and home use. Be cautious of environmental noise and potential weather impact when using them outside.