Sennheiser HD 400Ss
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Quick summary
The Sennheiser HD 400Ss are compact, closed-back headphones aimed at everyday listening. Buying pre-owned can cut the price compared with the original retail cost while still delivering Sennheiser sound. If you want to see more headphone options while you explore, start from our Headphones category to compare brands, styles and prices.
What sets the HD 400Ss apart?
Launched in 2018, the HD 400Ss are designed for portable use and casual listening. They focus on clear mids and a tightened low end, making them a good match for streamed music, podcasts and commuting. Below are the main features and why they matter.
- Closed-back design — Offers passive noise isolation so you hear your music with less outside distraction, useful on trains and in busy spaces.
- Comfort-focused fit — Lightweight construction and cushioned ear pads make them comfortable for longer listening sessions.
- Portable form — Foldable hinges and a compact profile make storage and travel easier.
- Smartphone-friendly controls — Many retail units include an inline remote and mic for calls and media control.
- Balanced sound tuning — Emphasis on clear vocals and controlled bass suits pop, acoustic and vocal-heavy playlists.
| Type | Closed-back, over-ear/portable |
|---|---|
| Best for | Commuting, everyday listening, streaming |
| Connectivity | Wired 3.5 mm jack (typical) |
| Launch year | 2018 |
Series and similar Sennheiser models
The HD 400Ss sit in Sennheiser’s accessible listening range. If you want more options, compare these models:
- Sennheiser Momentum 4 — Premium wireless headphones with advanced ANC and long battery life, better for those who want noise cancelling and wireless freedom.
- Sennheiser HD 560S — Open-back, reference-tuned headphones aimed at home listening and critical listening rather than portable use.
- Sennheiser HD 600 — Classic audiophile open-back headphones for high-fidelity listening with larger soundstage and pricier aftermarket options.
How to pick the right option
- If you need portability and passive isolation, the HD 400Ss are a practical choice.
- If you prefer wireless and active noise cancelling, look at the Momentum series.
- If home listening and neutral accuracy matter most, consider the HD 560S or HD 600.
Price range and availability
There are currently available pre-owned products priced between 160 and 160. Use the price and condition filters to focus your search and find a match for budget and quality preferences.
Things to consider when buying pre-owned
- Check the seller’s description for included accessories such as cables, carry case and any inline remote.
- Look for mentions of ear pad wear or cable damage in the listing photos and description.
- Prefer listings that clearly state return policies or seller guarantees for a safer purchase.
- Filter by price and condition to compare value across offers.
Questions and answers
Are the HD 400Ss good for bass-heavy music?
They have a controlled, punchy low end rather than heavy, overpowering bass. That makes them well suited to pop, hip-hop and electronic music where clarity matters.
Do they work with smartphones and laptops?
Yes. The model is typically supplied with a 3.5 mm connector and many versions include an inline mic and remote for phones. They also work with laptops, tablets and portable players with a headphone jack or adapter.
What should I expect from a pre-owned pair?
Expect normal signs of use like light surface wear or slightly compressed ear pads. Listings will state condition grade; use that along with price to judge value. Warranty and return options vary by seller.
Find and buy Sennheiser HD 400Ss via Relovie – the largest collection of pre-owned and refurbished electronics online.