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Sennheiser HD 400S: Foldable Over-Ear Headphones for On-the-Go
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Sennheiser HD 400S: Foldable Over-Ear Headphones for On-the-Go

· re:union Radio editorial · 2 min read

Sennheiser HD 400S: closed, foldable over-ear headphones with 18 ohms and a detachable cable for music and calls on the go.

The Sennheiser HD 400S is a closed, wired over-ear headphone that the manufacturer positions as a lightweight, foldable companion for music and phone calls on the go. For DJs and producers commuting between the studio and the club, this combination of weight and clamping force is often more important than the last detail in the frequency response.

At a glance

  • Closed over-ear design, foldable
  • Impedance 18 ohms
  • Detachable 1.4 m cable with 3.5 mm jack plug, remote control, and microphone

Closed Design for On-the-Go

Sennheiser uses a closed, circumaural design for the HD 400S. This dampens ambient noise and simultaneously keeps your own sound in your ear — practical if you want to quickly check a track on the train or at the gate without disturbing your seat neighbors. According to the manufacturer, the dynamic drivers are designed for a balanced sound with emphasized bass.

Foldable, Lightweight, with Remote Control

The housing can be folded, making it compact enough for your jacket pocket or gig bag. The 1.4-meter-long, detachable cable features a one-button remote control with a microphone, which allows you to control playback and calls on smartphones, tablets, or recorders. The plug is right-angled, which protects the cable when carried in a bag.

Technical Classification

With an impedance of 18 ohms, the HD 400S can be operated sufficiently loudly even on simpler outputs of smartphones or portable players, without the need for a dedicated headphone amplifier.

DesignClosed, Over-Ear, foldable
DriversDynamic
Impedance18 Ohm
Cable1.4 m, detachable, 3.5 mm jack plug (right-angled)
Controls1-button remote control with microphone

„The dynamic drivers deliver a well-extended sound response with dynamic bass.“

If you're interested in compact studio headphones, you'll find more practical tips for mobile DJ use in our article on CDJ tricks for everyday clubbing. The reliability of your headphones when cueing also plays a role in EQ mixing.

FAQ

Who is the Sennheiser HD 400S suitable for?

Sennheiser positions the HD 400S for listening to music and making calls on the go. Its lightweight, foldable design and closed construction make it an uncomplicated companion for commuters, travelers, and anyone looking for compact headphones for mobile use.

Can the cable be replaced?

Yes, the included cable with remote control and microphone is detachable and terminates in a right-angled 3.5 mm jack plug.


Source: Sennheiser, HD 400S Product Page, technical data according to manufacturer.

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