The HD 400S features a one-button smart remote conveniently located on the cable, which allows you to control music and take calls with ease, and the sturdy folding design makes these headphones durable and compact enough to be taken anywhere. Sennheiser dynamic drivers deliver a well-extended sound response with dynamic bass.

Key Features

• Renowned Sennheiser sound quality for a unique listening experience.
• Built-in microphone and remote for call and music control.
• Closed-back around-ear headphones reduce unwanted background noise for your comfort.
• Lightweight, foldable headphones for easy on-the-go storage.

Inline remote with mic

Featuring a one-button smart remote on the cable, the HD400S lets you take control of your music and calls. Play, pause, and skip your music and accept or drop calls all at the touch of a button. Tapped twice, you can also call on Siri or Google Assistant for voice guidance instructions.

Sennheiser sound

Using large Sennheiser drive units, the HD400S provides a rich, evenly balanced sound with powerful bass. Using closed backs, they also keep out background noise letting you hear more detail.

Surround yourself in music

With their large ear pads, the HD400S fit around your ears rather than simply sitting on top of them. This and the padded headband make them comfortable for longer listening sessions. For their size, theyre also surprisingly light.

Foldable and convenient

The foldable design makes these headphones easy to store in your bag when not in use. A single-sided cable and angled 3.5mm plug also make for a more comfortable connection when your music device is in your top pocket.

Specifications

Impedance
18 OhmsFrequency response (Microphone)
100 10,000 Hz (-10 dB)
Frequency response (Headphones)
1820,000 Hz (-10 dB)
Sound pressure level (SPL)
120dB (1kHz/1Vrms)
THD, total harmonic distortion
<0.5% (1kHz/100dB)
Ear coupling
Over-EarJack plug
3.5mm angledCable length
1.4mTransducer principle
Dynamic
Weight
217g
Pick-up pattern
Omni directional
Microphone sensitivity
44dbV/Pa
Acoustics
ClosedSensitivity
120 dB SPL @ 1 kHz, 1V RMS