The debut model for 2026 in the Sennheiser profile brand lineup are wired over-ear headphones positioned in the mid-price range. Within the company's range, they can be considered entry-level solutions. In fact, the model is an update of the HD 400S version, where the original cable with a mini-Jack (3.5 mm) is replaced with USB-C, which expands compatibility with modern devices, including smartphones, tablets, iPhone 15 and later, etc.
The detachable cable includes a built-in microphone and controls for managing music playback and/or taking phone calls. The Sennheiser HD 400U headphones feature 32mm dynamic drivers with high sensitivity (up to 120 dB), enough for passive sound isolation even in quite noisy environments (street, public transport, industry). As is customary for this brand, users can expect a balanced soundstage with clear lows, detailed highs, and controlled bass. Additionally, a low level of harmonic distortion (< 0.5%) is declared, which in practice should please fans of various musical genres. Mention should be made of the sturdy construction and well-thought-out ergonomics for comfortable use, including the folding capability, moderate overall weight (217 grams), and soft, replaceable ear pads made of leatherette.
The information in the model description is for reference purposes. Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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Sennheiser HD 400U Headphones
The Sennheiser HD 400U brings balanced, enjoyable sound to a lightweight and portable over‑ear design made for daily listening. Its closed‑back earcups help reduce ambient noise, allowing you to focus on your music, videos, or calls whether you’re at home, at work, or on the move. Sennheiser‑tuned dynamic drivers deliver a clear, natural sound with... moreexpressive mids, smooth highs, and controlled bass for a pleasant listening experience across a range of genres. A one‑button inline smart remote makes it easy to manage music playback and take calls without reaching for your phone. The foldable design and detachable cable allow the HD 400U to travel easily, fitting into bags and backpacks without taking up space. Soft ear pads and a secure over‑ear fit ensure comfort throughout long sessions. Built with durable materials for everyday reliability, the HD 400U connects easily to laptops, tablets, and mobile devices with a standard USB Type C connector. It’s a simple, dependable way to enjoy Sennheiser sound anywhere your day takes you.
overhead, open, wired, detachable cable, 3.5 mm, 6.35 mm, 3 m, no microphone, 12 – 38500 Hz, 50 Ohm, battery: with case + 1.2 m — cable with microphone
overhead, closed, combined, detachable cable, 3.5 mm, USB-C, 1.2 m, Bluetooth v5.2, AAC, aptX, active noise cancellation, 6 – 40000 Hz, 480 Ohm, battery: 700 mAh, up to 60 h
overhead, closed, combined, detachable cable, 3.5 mm, 1.5 m, Bluetooth v5.0, AAC, aptX, active noise cancellation, voice assistant, foldable, 18 – 22000 Hz, L-plug, battery: 600 mAh, up to 30 h
