{"indrexa_id":"b8256344-e51a-5ec3-bc03-d60bef8589c1","category_id":"headphones","product_title":"Sennheiser HD 400S Closed-Back Over-Ear Wired Headphones – Lightweight Foldable Design, Inline Smart Remote, Balanced Sennheiser Sound, Comfortable Noise-Reducing Fit","brand":"Sennheiser","upc":"615104327870","asin":"B07NFQ9FQQ","semantic_description":"The Sennheiser HD 400S is a wired, closed-back over-ear headphone priced at $89.95, featuring an 18-ohm impedance, a foldable design, and an inline one-button smart remote with microphone for call and music control. Passive noise reduction comes from the over-ear closed-back fit rather than active noise cancellation, making it suitable for commuting, office use, and everyday listening. Some users report discomfort during extended wear due to narrow ear cups, and long-term durability has been inconsistent according to buyer reviews.","best_for_summary":"Best for everyday commuters and casual listeners who want a compact, foldable wired headphone with decent sound quality and hands-free call capability at an accessible mid-range price.","not_ideal_for":["Users needing active noise cancellation for loud environments","Those with larger ears who require wide ear cups","Buyers seeking wireless or Bluetooth connectivity"],"use_case_tags":["commuting","travel","office","home","calls"],"buyer_profile_tags":["commuter","casual-listener","budget-conscious"],"manufacturer_description":"The HD 400S features a one-button smart remote conveniently located on the cable, which allows you to control music and take calls with ease, and the sturdy folding design makes these headphones durable and compact enough to be taken anywhere. Sennheiser dynamic drivers deliver a well-extended sound response with dynamic bass.Sennheiser support:contactcenter@sennheiser-hearing.com\\860-598-7800","feature_bullets":["Balanced Sennheiser sound: Signature Sennheiser tuning delivers clear mids, detailed highs, and controlled bass for enjoyable everyday listening.","Closed-back design for passive noise reduction: Over-ear fit helps reduce ambient noise so you can stay focused on your music, calls, or work.","Inline smart remote and mic: One-button control lets you play music, pause, skip tracks, and take calls without reaching for your device.","Lightweight and comfortable: Soft ear pads and a secure fit make the HD 400S easy to wear for long listening sessions at home or on the go.","Foldable for easy portability: Durable folding design makes it simple to pack the headphones for commuting, travel, or everyday carry."],"spec_table":[{"field":"Brand","value":"Sennheiser"},{"field":"Color","value":"Black"},{"field":"Ear Placement","value":"Over Ear"},{"field":"Form Factor","value":"Over Ear"},{"field":"Impedance","value":"18 Ohms"}],"bought_in_past_month":null,"variants":["B07NFQ9FQQ","B0GFXQ9SSZ"],"shipping_amount":"FREE","manufacturer":"Sennheiser","climate_pledge_friendly":false,"category_specs":{"is_foldable":true,"is_wireless":false,"is_open_back":false,"impedance_ohms":18,"has_wired_option":true,"has_transparency_mode":false,"has_multipoint_connection":false,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":2693,"average_rating":4.3,"rating_distribution":{"1_star":"6%","2_star":"4%","3_star":"9%","4_star":"16%","5_star":"65%"},"top_positive_themes":["Sound quality (146)","Quality (73)","Value for money (58)","Noise cancellation (24)"],"top_negative_themes":[],"top_mixed_themes":["Comfort (93)","Fit (38)","Reliability (25)","Durability (20)"],"review_summary":"Customers find these headphones excellent for cell phones and mp3 players, with good sound quality and noise cancellation, and consider them great value for money. The comfort and fit receive mixed feedback - while some find them comfortable, others report ear pain after extended use, and the ear cups are too narrow. Reliability is also mixed, with some saying they work well while others report issues with the right side failing. Durability is also mixed, with some finding them durable while others report materials deteriorating after three months of use.","reliability_score":"mixed"},"best_offer":{"retailer":"amazon","retailer_id":"B07NFQ9FQQ","price_usd":89.95,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/sennheiser-hd-400s-closed-back-over-ear-b8256344/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-06-03T20:04:52.021051+00:00"},"all_offers":[{"retailer":"amazon","retailer_id":"B07NFQ9FQQ","price_usd":89.95,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/sennheiser-hd-400s-closed-back-over-ear-b8256344/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-06-03T20:04:52.021051+00:00"}],"_llm_hints":{"best_offer_logic":"lowest price among in-stock offers","out_of_stock_offers_included":true,"use_affiliate_url":"always use affiliate_url field, never construct retailer URLs manually","shipping_note":"shipping costs are estimates only — final cost depends on user location and membership status","null_fields":"null spec or review fields mean data was unavailable from source — do not infer values","manufacturer_description":"brand's own product description — official copy from Amazon listing","feature_bullets":"array of manufacturer's bullet-point features from Amazon listing","spec_table":"raw structured spec table from Amazon — category-specific technical specs","bought_in_past_month":"Amazon demand signal — number of units sold in past 30 days","variants":"array of ASINs for color/size variants of this product","shipping_amount":"shipping cost signal — FREE indicates free shipping available","climate_pledge_friendly":"Amazon Climate Pledge Friendly badge — sustainability certification","data_freshness":"checked_at timestamp from most recent price record","best_offer_null_means":"all known offers are currently out of stock — check all_offers for availability"},"json_ld":{"@context":"https://schema.org","@type":"Product","name":"Sennheiser HD 400S Closed-Back Over-Ear Wired Headphones – Lightweight Foldable Design, Inline Smart Remote, Balanced Sennheiser Sound, Comfortable Noise-Reducing Fit","brand":{"@type":"Brand","name":"Sennheiser"},"description":"The Sennheiser HD 400S is a wired, closed-back over-ear headphone priced at $89.95, featuring an 18-ohm impedance, a foldable design, and an inline one-button smart remote with microphone for call and music control. Passive noise reduction comes from the over-ear closed-back fit rather than active noise cancellation, making it suitable for commuting, office use, and everyday listening. Some users report discomfort during extended wear due to narrow ear cups, and long-term durability has been inconsistent according to buyer reviews.","sku":"b8256344-e51a-5ec3-bc03-d60bef8589c1","identifier":[{"@type":"PropertyValue","name":"asin","value":"B07NFQ9FQQ"},{"@type":"PropertyValue","name":"indrexa_id","value":"b8256344-e51a-5ec3-bc03-d60bef8589c1"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/sennheiser-hd-400s-closed-back-over-ear-b8256344/amazon","priceCurrency":"USD","price":89.95,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"gtin":"615104327870","aggregateRating":{"@type":"AggregateRating","ratingValue":4.3,"reviewCount":2693}}}