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Black over-ear headphones with foldable headband and inline remote

Sennheiser HD 400S Closed-Back Over-Ear Wired Headphones

SKU CH-FSJZ-6CVVE

Closed-back over-ear headphones with 32 mm drivers, inline remote and foldable design for portable listening

  • TypeOver the Ear
  • ColorBlack
  • THDOver Ear
  • Input Impedance18 ohms
  • Connector2.5mm
  • Ear Couplingover_ear
  • Balanced Sennheiser sound with clear mids and controlled bass
  • Closed-back design reduces ambient noise for focused listening
  • Inline smart remote controls playback and calls with one button
  • Lightweight 7.65 oz build with soft pads for long comfort
  • Foldable construction packs easily for travel and daily carry

Closed-back headphones for daily listening

The Sennheiser HD 400S is a wired over-ear headphone built for music, calls and work. Its closed-back cups give passive noise reduction so ambient sound stays low without active electronics. The 18-ohm impedance lets phones, laptops and tablets drive them to useful volume without an extra amplifier. Foldable hinges and a 7.65-ounce weight make them practical for commuting and travel.

Simple plug-in setup with detachable cable

Connect the supplied cable to the 2.5-millimetre jack on the earcup and the 3.5-millimetre plug to your device; no drivers or pairing are required. The inline one-button remote handles play, pause, track skip and call answer on most smartphones. A common issue is that some Android handsets interpret the remote signals differently, so volume or skip may not respond on every model.

18-ohm impedance matches portable sources

The single figure that decides compatibility is the 18-ohm input impedance. It ensures adequate loudness from low-voltage outputs such as phone headphone sockets or laptop jacks. If your source needs a higher-impedance load or you require a balanced connection, this model will not suit that need.

Highlights

  • Balanced Sennheiser sound with clear mids and controlled bass
  • Closed-back design reduces ambient noise for focused listening
  • Inline smart remote controls playback and calls with one button
  • Lightweight 7.65 oz build with soft pads for long comfort
  • Foldable construction packs easily for travel and daily carry

Specifications

BrandSennheiser
Series400
ModelHD 400S
Part NumberHD 400S
TypeOver the Ear
ColorBlack
THDOver Ear
Input Impedance18 ohms
Connector2.5mm
Ear Couplingover_ear
Weight7.65 ounces
Noise CancellingPassive
Microphone Impedance18 ohm
Featurespassive_noise_cancellation, Detachable, control,remote, remote, Wired, Over Ear, dynamic_driver, 18 ohm, Headphone
Package ContentsHeadphone, Cable

Questions about this item

How can I confirm the HD 400S is working correctly after plugging it in?

Play audio and verify balanced sound with clear mids, detailed highs and controlled bass; test the inline smart remote by pressing the button to play, pause, skip tracks and answer a call; check that passive noise reduction noticeably lowers ambient sound.

What does the package contain and is any extra accessory required?

The box includes the headphones and a detachable cable with a 2.5 mm connector; no additional accessory is needed for wired use.

Which version of the HD 400S should I choose?

The HD 400S is offered as a single model with 32 mm, 18 ohm transducers, closed-back over-ear design, folding headband and inline smart remote — select this version for portable wired listening.

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