Sennheiser HD 400S Review: Budget Gem with Caveats
A Reddit user shared the moment they unboxed their first pair of Sennheiser HD 400S Closed Back headphones: “these are really good headphones, especially for the price… super comfy too.” That enthusiasm reflects a prevailing sentiment across platforms, with the HD 400S earning consistent scores around 4.3–4.4/5. On a quality scale, they land a solid 8.5/10, balancing strong audio performance with comfort, though some users point to build quirks and an underwhelming microphone.
Quick Verdict: Conditional buy – excellent for budget-conscious music lovers, less ideal for large heads or critical mic use.
| Pros | Cons |
|---|---|
| Clear, detailed sound with deep bass | Some report headband too tight for larger heads |
| Comfortable plush ear cushions | Microphone quality criticized as "gloomy" or weak |
| Foldable, portable design | Cable length may be short for some setups |
| Sturdy build for the price | Occasional clamp discomfort over long sessions |
| Detachable cable with smart remote | Plastic headband feels less premium |
| Effective passive noise isolation | Earpieces slightly small for some users |
Claims vs Reality
Sennheiser markets the HD 400S as delivering “well-extended sound response with dynamic bass” and “renowned Sennheiser sound quality.” Digging deeper into user reports, those audio claims mostly hold. A verified buyer on Amazon noted: “clean sound with deep bass, not a cheap loud most headphones in this price point go for,” and Best Buy customers consistently rated sound quality at 4.7/5.
The brand also promotes the HD 400S as having “closed-back around-ear” comfort with noise isolation. While many listeners found the fit snug and immersive, Reddit user comments reveal that the tight seal can feel like “almost vacuum around your ears” and might take getting used to. For larger heads, Fakespot reviewers warned: “not great for larger heads… the material on the underside of the headband sucks.”
Finally, Sennheiser’s claim of “built-in microphone and remote for call and music control” meets a mixed reality. Trustpilot users in Russia described the mic as “gloomy… friends on Discord wanted to shoot me for the sound,” suggesting it’s fine for casual calls but unsuited for studio or streaming work.
Cross-Platform Consensus
Universally Praised
The HD 400S wins broad approval for sound quality across Amazon, Best Buy, and Quora reviews. Quora’s top-rated feedback described them as “magnificent headphones… for audio quality.” This makes them attractive to budget audiophiles and casual listeners alike. Bass lovers will appreciate what Yandex reviewers call “deep, expressive low end… without dominating the rest of the mix.” Travelers benefit from the folding design; Best Buy customers praised “nifty fold, great for storing… folds neatly without collapsing on themselves constantly.”
Comfort is another strong point, particularly for moderate-sized heads. A Fakespot-aggregated buyer said, “comfortable fit… worn for extended periods without discomfort,” and the plush ear cushions often earn compliments like “super comfy” from Reddit members. The detachable cable with locking mechanism adds versatility and reliability for users who want to swap cables or connect to different devices.
Common Complaints
Clamp force and fit emerge as the most repeated criticisms. Buyers with larger heads find them tight, with one Trustpilot reviewer noting, “for my big head… causes pressure after hours.” The microphone’s underperformance is echoed by multiple sources; Redditors and Quora users agree it’s “another story” compared to the sound quality of the headphones themselves. Cable length also causes minor frustration—Yandex Market users mention needing extensions or adaptors for certain setups.
Plastic construction raises durability questions despite overall sturdiness. Fakespot participants note “plastic headband… but for price range I can’t complain,” suggesting it’s a trade-off to achieve the sub-$90 price point. In rare cases, users report a faint chemical smell when new.
Divisive Features
The HD 400S’s passive noise isolation divides opinion. Some find it stellar—Best Buy buyers highlight “help to block out the noise”—while others on Yandex suggest it’s merely “good for the price.” Bass tuning also sits in this middle ground: certain users praise its depth and punch, while others wish for more impact, particularly for electronic music.
Trust & Reliability
Long-term owners provide clues to durability. A Best Buy repeat buyer stated, “first pair has been rock solid… don’t imagine they’ll die any time soon.” Reddit’s headphone community includes voices saying they’ve “used mine today years after buying them” without issue.
On the trust side, Fakespot data indicates low deception rates in reviews, with over 80% high-quality verified feedback. However, isolated negatives about new-unit smell and cosmetic blemishes (scratches on headband) hint at occasional QA lapses, more common in refurbished purchases from certain sellers.
Alternatives
When Reddit users weighed options, Sony and Audio-Technica came up, but often at higher price points. One commenter observed, “personally, I would suggest Sony or Audio-Technica but they are not in your price range.” For those considering a step up, Sennheiser’s HD 559 was mentioned, potentially offering a more open soundstage but lacking the portable folding build.
Price & Value
At $85–$90 new on Amazon and frequently discounted in regional markets, the HD 400S offers strong value. eBay refurbished listings dip to around $62, making them appealing for budget buyers who trust seller warranties. Resale value appears stable, with sellers describing “fully functional… works like new” units available at moderate markdowns.
Trustpilot and Quora contributors emphasize the price-to-quality ratio, with one stating, “for this price, you cannot buy anything better.” Frequent mention of them outperforming cheaper models also supports their standing as a safe budget investment.
FAQ
Q: Is the microphone good enough for gaming or streaming?
A: Most users find the built-in mic serviceable for casual calls, but not for high-quality recording or streaming. Trustpilot reviews describe it as “gloomy” and lacking clarity.
Q: Are they comfortable for large heads?
A: Fit comfort depends on head size. Smaller to medium heads report great comfort, but Fakespot and Trustpilot data show larger heads may experience clamp discomfort over long sessions.
Q: How portable are they?
A: Very portable—the foldable design and detachable cable make them easy to store and travel with. Best Buy buyers liked the “nifty fold” and storage pouch for trips.
Q: Do they need a DAC to sound good from a phone?
A: Several Reddit users suggest a DAC improves performance from mobile devices, though many find them “sound great out of my boom box and my phone” without extra gear.
Q: How is the noise isolation?
A: Effective for passive isolation in everyday environments, but not as absolute as active noise-cancelling models. Enough to “block out the noise” for most casual listening.
Final Verdict: Buy if you’re a budget-conscious listener who values solid Sennheiser sound quality, portable design, and comfort for average head sizes. Avoid if you have a large head, require a top-tier microphone, or prefer a more open soundstage. Pro tip from the community: consider pairing with a good DAC if using with mobile for maximum performance.
