Sennheiser HD 400U Wired USB-C Over-Ear Headphones - Black
HD 400U
For more than 80 years, Sennheiser has stood for true sound. The HD 400U carries this legacy forward, delivering the unmistakable Signature Sennheiser Sound through a modern USB-C connection. No pairing. No batteries. Just pure, uncompressed audio, instantly.
- True Sennheiser sound: Balanced tuning with clear mids, detailed highs, and controlled bass
- Pure digital audio: USB C connection delivers stable, uncompressed sound without pairing or charging
- Flexible listening: Removable cable system lets you use the included USB-C cable or switch to an optional analog cable
- Stay connected: Inline remote and microphone for easy call handling and music control
- Comfortable closed-back design: Lightweight, foldable construction with passive noise isolation and soft, replaceable ear pads
- Built to last: Durable materials engineered for everyday reliability
Sennheiser Signature Sound USB-C Closed-Back Headphones
- Signature Sennheiser Sound
- USB-C digital plug-and-play connection
- Removable cable system
- Inline remote & microphone
- Closed-back over-ear comfort
Hear music the way the artist intended.
At the heart of the HD 400U is the Signature Sennheiser Sound. Carefully tuned to be balanced and natural, it reveals emotional detail that standard headphones often miss. Clear and expressive mids, shimmering highs, and deep yet controlled bass combine to create a listening experience that feels authentic, immersive, and true to the music.
Plug and play simplicity that lets the music speak.
The USB C digital connection delivers uncompressed audio directly from your device to your ears. With no pairing rituals or batteries to manage, the HD 400U offers a reliable, plug-and-play experience across compatible smartphones, tablets, laptops, and computers. Just connect and press play.
Comfortable design, ideal to carry around.
Lightweight and secure, the HD 400U is built for hours of comfortable listening. The closed-back over-ear design provides passive noise isolation while allowing the sound to breathe. Soft, replaceable ear pads and a foldable construction make it ideal for work, travel, and everyday use.
Flexible and functional
The removable cable system gives you the freedom to adapt to different devices. Use the included USB C cable with inline remote and microphone for calls and playback, or switch to an optional analog cable when needed.
Ear coupling
Over-ear
Transducer principle
Dynamic
Acoustic principle
Closed
Plug
USB C
Cable length
1.4 m
Weight (headphone)
217 g
Headphones - Frequency response
18 – 20,000 Hz (-10 dB)
Headphones - Impedance
18 O
Headphones - Sound pressure level (SPL)
120 dB SPL @ 1 kHz, 1V RMS
Headphones - Total harmonic distortion (THD)
<0.5% (1 kHz, 100 dB SPL)
Microphone - Frequency response
100 – 10,000 Hz
Microphone - Pick-up pattern
Omni-directional
Microphone - Sound pressure level (SPL)
-44 dbV/Pa
- Ear coupling
- Over-ear
- Transducer principle
- Dynamic
- Acoustic principle
- Closed
- Plug
- USB C
- Cable length
- 1.4 m
- Weight (headphone)
- 217 g
- Headphones - Frequency response
- 18 - 20,000 Hz (-10 dB)
- Headphones - Impedance
- 18 O
- Headphones - Sound pressure level (SPL)
- 120 dB SPL @ 1 kHz, 1V RMS
- Headphones - Total harmonic distortion (THD)
- <0.5% (1 kHz, 100 dB SPL)
- Microphone - Frequency response
- 100 - 10,000 Hz
- Microphone - Pick-up pattern
- Omni-directional
- Microphone - Sound pressure level (SPL)
- -44 dbV/Pa
As an international traveller you are entitled to bring a certain amount/value of goods that are free of Customs duty and exempt Goods and Services tax (GST) into New Zealand. This is called your duty free allowance and personal goods concession. It is important to review these for any purchases you make on The Mall.
Your duty free allowance entitles you to bring into New Zealand the following quantities of alcohol products free of customs duty and GST provided you are over 17 years of age. You do need to be 18 years or over to purchase.
- Up to six bottles (4.5 litres) of wine, champagne, port or sherry or
- Up to twelve cans (4.5 litres) of beer
- And three bottles (or other containers) each containing not more than 1125ml of spirits, liqueur, or other spirituous beverages
Goods other than alcohol and tobacco, whether purchased overseas or purchased duty free in New Zealand, that have a combined total value not exceeding NZ$700 may also be brought as part of your personal goods concession.
When travelling overseas there are legal limits on the amount of duty free alcohol and other goods you can take with you. These amounts will vary depending on the country you are flying into. We always recommend you check the latest limits and exemptions.
Your order can be picked up at an Auckland Airport Collection Point. There is one in departures and one at arrivals in the international terminal. Alternatively, if you are arriving between 11pm and 6am you will be able to collect your order from our lockers. See map
Please bring your order confirmation email and your passport. If you are collecting from lockers you will have been sent an email with your access code, be sure to have this on you in order to collect your order.
If you’re departing Auckland Airport, we recommend that you come to the Auckland Airport Collection Point at least 60 minutes before your flight. If you miss your pickup time or your flight details have changed please let us know as soon as possible.
When you collect your order you will have the opportunity to inspect the items and sign for them.
If you need to return an item, our Collection Point team are there to help you. If you are collecting after hours please return the item to your locker and our team will be in touch as soon as possible. You may also like to view our Returns & refunds which provides information on how this works and outlines the individual retailer's returns and refunds policies.
After Hours Collections
If your order needs to be collected after the Auckland Airport Collection Point desk is closed, your order will be placed in the lockers next to the desk. All the details you will need to collect your order will be provided in your Order Confirmation and Ready to Collect Email.