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CATALOG
Sennheiser HD400S

Description

The Sennheiser HD 400S are closed-back circumaural headphones designed for those seeking discreet, private listening on the go without sacrificing the German brand's signature sound. The dynamic transducer covers a claimed frequency range of 18 to 20.000 Hz with full, well-extended bass, while the closed-back design limits sound leakage and reduces ambient noise on the train, in the office, or in the library.

The 18 ohm impedance and 120 dB SPL at 1 V RMS make these headphones easy to drive: they reach generous volumes when connected directly to the output of a smartphone, tablet, or notebook sound card, without the need for a dedicated headphone amplifier. This is a significant difference compared to the same brand's 150 or 300 ohm audiophile models, which require a well-sized source to express themselves.

The 1,4 meter cable integrates a one-button remote control with omnidirectional microphone: allows you to pause playback, answer and end calls without taking out your phone, and is compatible with major systems operaMobile headphones. What's the difference between closed-back and open-back headphones for mobile listening? Closed-back headphones, like these, isolate outside noise better and don't disturb those around you, while open-back headphones offer a more open soundstage but should be used in quiet environments.

The foldable design and lightweight 217 grams complete the package of over-ear travel headphones : the earcups rotate and fold over the headband, saving space in your bag or backpack. The angled 3,5 mm jack secures the connection when the device is left in your pocket. They succeed the HD 4.30 in the Sennheiser catalog and inherit their sound, with a moderate emphasis on low frequencies that makes them versatile for pop, electronic music, and podcasts, as well as a second pair of headphones to complement a higher-end home system.

Specifications

Headphone type over-ear
Driver type dynamic
Headphone impedance 18 ohm
Frequency response 18 - 20.000 Hz
Headphone weight 217 g
Maximum sound pressure (1m) 120 dB
Harmonic Distortion (THD) 0.5%
Length 1.4 m
Cable termination Angled 3,5mm jack

About the brand

Sennheiser is one of the most prestigious brands in the professional and consumer audio landscape, founded in 1945 by Fritz Sennheiser in the small town of Wedemark, Germany. With over 75 years of history, the German company has established itself as a world leader in the design and manufacture of high-quality headphones, microphones, and audio systems, earning the trust of audiophiles, professional musicians, and hi-fi enthusiasts worldwide.

Sennheiser's corporate philosophy is based on three fundamental pillars: technological innovation, German craftsmanship, and a passion for perfect sound. Since its founding, the company has maintained an artisanal approach to production, combining traditional techniques with the most advanced digital technologies. The headquarters in Wedemark still houses the research and development laboratories where innovations that have revolutionized the world of audio are born. This commitment to excellence is reflected in every product, from entry-level headphones to wireless transmission systems.missionand professional wireless headphones used at the world's most important events. The company's culture fosters a continuous pursuit of sonic perfection, supported by a team of acoustic engineers who constantly work to improve audio quality and the listening experience. This dedication has allowed Sennheiser to maintain its leadership position in the high-fidelity market, creating products that not only meet the highest technical expectations but also thrill listeners through the purity and naturalness of their sound reproduction.

Sennheiser's signature technologies include the revolutionary magnetostatic technology used in the Orpheus HE 1 headphones, considered the pinnacle of home listening. The transmission systemmissionThe proprietary wireless digital signal ensures minimal latency and crystal-clear audio quality, while NoiseGard active noise cancellation technology offers an immersive listening experience even in the noisiest environments. The innovative acoustic tuning system optimizes the frequency response for different music genres, while the latest-generation dynamic transducers ensure faithful reproduction from the highest frequencies to the deepest bass.

Sennheiser's product range spans from consumer headphones to the most sophisticated professional solutions. In the open-back segment, we find the HD 800S and HD 660S models, ideal for high-quality home listening, while closed-back headphones like the HD 25 have become a standard in professional DJing. For the most discerning audiophiles, the Orpheus series represents absolute excellence with the HE 1, electrostatic headphones priced at €59.000 that redefine the limits of audio reproduction. The Momentum wireless headphones offer the perfect combination of modern technology and elegant design, integrating active noise cancellation and advanced audio codecs for streaming from mobile devices.

The professional line includes dynamic and condenser microphones used in recording studios, concerts and transmissiontelevisions around the world. The Evolution series wireless systems guarantee transmissionmissionThe Sennheiser Group's Neumann series studio microphones are considered the absolute benchmark for vocal and instrument recording. For home stereo systems, Sennheiser produces headphone amplifiers such as the HDV 820, specifically designed to drive the German company's high-impedance headphones, ensuring perfect control and maximum sound dynamics.

Sennheiser's international accolades are a testament to the excellence of the German company's products. The HD 800 headphones have received numerous awards from the trade press, including the prestigious EISA Awards and accolades from What Hi-Fi? and Stereophile. Audio magazine called the Orpheus HE 1 "the new absolute reference for headphone listening," while the international press has celebrated the technological innovation and build quality of Sennheiser products. The headphone amplifiers have received rave reviews for their ability to maximize the sonic characteristics of the paired headphones, confirming the German company's systems approach.

Sennheiser's target audience includes discerning audiophiles, audio professionals, musicians, and hi-fi enthusiasts seeking the highest sound quality. The price range extends from entry-level models around €50 to ultra-premium solutions exceeding €50.000, covering every segment of the hi-fi market. Discerning audiophiles particularly appreciate floorstanding speakers paired with integrated tube amplifiers to create reference-level stereo systems, while professionals choose Sennheiser for its reliability and precision in the most demanding environments.

Sennheiser's Italian distribution is managed through a network of selected specialized dealers, who guarantee qualified technical advice and professional after-sales service. Authorized centers offer comprehensive technical support, from system setup to routine and extraordinary maintenance. Italian customer service ensures rapid response times and specific technical expertise, while an international warranty covers all officially distributed products. For those wishing to further their Sennheiser experience, listening sessions are available at authorized dealers, where you can test the entire range of solid-state integrated amplifiers, power amplifiers, source devices such as turntables and SACD/DVD players, as well as high-end bookshelf speakers to complete the perfect stereo system.

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HEADPHONES

Sennheiser
HD400S

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