• Sennheiser HD 400U closed-back over-ear headphones, three-quarter view
  • Sennheiser HD 400U, side view of the closed ear cup
  • Sennheiser HD 400U, front view
  • Sennheiser HD 400U folded for travel
  • Sennheiser HD 400U on a desk connected to a phone
  • Sennheiser HD 400U headphones in black
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Sennheiser

Sennheiser HD 400U USB-C Over-Ear Headphones — Closed-Back, Inline Mic

Sennheiser HD 400U USB-C Over-Ear Headphones — Closed-Back, Inline Mic
  • Genuine & Brand-New
  • Free Shipping · Ships from China
  • 1-Year Warranty
  • 45-Day Returns
$101.99 USD
$101.99 USD
Shipping calculated at checkout.

The Sennheiser HD 400U is a closed-back, over-ear wired headphone that plugs straight into USB-C, with a removable 1.4m cable carrying an inline remote and microphone. It suits phone, tablet and laptop users who want plug-and-play wired sound with no pairing or charging.

Who the Sennheiser HD 400U is for

  • USB-C phones, tablets and laptops: The digital USB-C connection is plug-and-play on compatible devices, with no pairing and no battery to charge.
  • Calls and video meetings: The inline remote and omni-directional microphone handle calls and playback from the cable.
  • Commuting and travel: Closed-back cups give passive noise isolation, and the foldable frame packs down for a bag.
  • Long listening sessions: At 217g with soft, replaceable ear pads, it is built for hours of comfortable wear.
  • Skip it if: your device only has a 3.5mm jack; the included cable is USB-C, and the analog cable is an optional extra.

Sennheiser HD 400U key specs

  • Type: Closed-back, over-ear, dynamic
  • Connection: USB-C digital, removable 1.4m cable
  • Impedance: 18Ω
  • Frequency response: 18Hz–20kHz (-10dB)
  • Sound pressure level: 120dB SPL @ 1kHz, 1V RMS
  • Microphone: Inline, omni-directional (100Hz–10kHz)
  • Controls: Inline remote for calls and playback
  • Design: Foldable, with replaceable ear pads
  • Weight: 217g
  • Color: Black

Genuine Sennheiser stock. Free shipping on every order, 45-day returns.

Sennheiser HD 400U vs similar options

  • vs Sennheiser HD 400S: Also closed-back, over-ear and foldable with no battery to charge, for less than half the price; pick the HD 400U to plug straight into a USB-C port.

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Specifications

Driver Dynamic, closed-back
Impedance 18Ω
Sensitivity 120dB SPL @ 1kHz, 1V RMS
Frequency response 18Hz–20kHz (-10dB)
Connector USB-C, removable 1.4m cable with inline remote and mic
Weight 217g

What's in the box

  • HD 400U headphones
  • USB-C cable with inline remote and microphone
  • Quick guide
Good to know

Buying from TonePier

Is this unit genuine?

Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.

Where does my order ship from, and how long does it take?

Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.

What if it isn't for me?

You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.