{"indrexa_id":"43cba864-bfa4-5cef-ab44-944b9408de08","category_id":"headphones","product_title":"Superlux HD681 Semi-Open Studio Headphones, Wired Over-Ear with 50mm Neodymium Drivers, Single-Sided Cable, 10-30,000Hz, for Monitoring, Recording, Mixing, Podcast, Music,Black","brand":"Superlux","upc":"887480666298 797864307863 008474924778","asin":"B002GHIPYI","semantic_description":"The Superlux HD681 is a semi-open back, wired over-ear headphone priced at $36.99, featuring 50mm neodymium drivers, a 10–30,000 Hz frequency response, 32Ω impedance, and a 2.5-meter single-sided cable. It is best suited for studio monitoring, home mixing, recording, and podcast production where an open soundstage and accurate audio reproduction are priorities. Comfort and durability have received mixed user feedback, and the long cable makes it less practical for portable or commuting use.","best_for_summary":"Best for budget-conscious home studio users, music producers, and audio enthusiasts who want a wide soundstage and detailed monitoring capability without spending more than $40.","not_ideal_for":["Commuters or portable listeners (long, non-detachable cable)","Users needing noise isolation (semi-open back design leaks sound)","Those prioritizing long-term durability (mixed build quality reports)"],"use_case_tags":["studio","home","audiophile","budget-friendly","podcast"],"buyer_profile_tags":["music-producer","budget-conscious","audiophile"],"manufacturer_description":"【 Accurate & Detailed Sound 】 The HD681 series deliver balanced audio with a 10–30,000 Hz frequency range, capturing every note in vivid detail. Ideal for professional monitoring across studio and stage settings. Enjoy deep bass, clear highs, and exceptional resolution, with a wide soundstage and impressive dynamics—ideal for a variety of music, especially classical.【 Deep Low-Frequency Impact 】 Specially tuned for rich low-end depth, the Ø50mm neodymium drivers deliver immersive clarity and presence, bringing classical music, large ensembles, and other dynamic genres to life.【 Comfortable Design 】Featuring a self-adjusting headband and soft leather earpads. The lightweight build and soft vinyl earpads make them perfect for long sessions without discomfort.【 Single-Sided Cable 】 Equipped with a durable 2.5-meter (8.2 ft.) straight, single-sided cable and screw-on gold-plated stereo mini plug, the HD 681 offers the freedom to move without the hassle of tangled cords.【 Professional Versatility 】 Designed for both professional and personal use, the HD681's durable design, 32 Ω impedance, and 300 mW maximum power make it adaptable to various settings. Perfect for mixing, tracking, or just enjoying classical music with unparalleled sound quality.","feature_bullets":["【 Accurate & Detailed Sound 】 The HD681 series deliver balanced audio with a 10–30,000 Hz frequency range, capturing every note in vivid detail. Ideal for professional monitoring across studio and stage settings. Enjoy deep bass, clear highs, and exceptional resolution, with a wide soundstage and impressive dynamics—ideal for a variety of music, especially classical.","【 Deep Low-Frequency Impact 】 Specially tuned for rich low-end depth, the Ø50mm neodymium drivers deliver immersive clarity and presence, bringing classical music, large ensembles, and other dynamic genres to life.","【 Comfortable Design 】Featuring a self-adjusting headband and soft leather earpads. The lightweight build and soft vinyl earpads make them perfect for long sessions without discomfort.","【 Single-Sided Cable 】 Equipped with a durable 2.5-meter (8.2 ft.) straight, single-sided cable and screw-on gold-plated stereo mini plug, the HD 681 offers the freedom to move without the hassle of tangled cords.","【 Professional Versatility 】 Designed for both professional and personal use, the HD681's durable design, 32 Ω impedance, and 300 mW maximum power make it adaptable to various settings. Perfect for mixing, tracking, or just enjoying classical music with unparalleled sound quality."],"spec_table":[{"field":"Brand","value":"Superlux"},{"field":"Color","value":"Black"},{"field":"Ear Placement","value":"Over Ear"},{"field":"Form Factor","value":"Over Ear"},{"field":"Impedance","value":"32 Ohms"}],"bought_in_past_month":"50+","variants":["B002GHIPYI","B0D6GL3Z3N","B002Z9CLD8"],"shipping_amount":"FREE","manufacturer":"Superlux","climate_pledge_friendly":false,"category_specs":{"is_foldable":false,"is_wireless":false,"is_open_back":true,"impedance_ohms":32,"has_wired_option":true,"max_input_power_mw":300,"has_transparency_mode":false,"has_multipoint_connection":false,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":4167,"average_rating":4.3,"rating_distribution":{"1_star":"5%","2_star":"4%","3_star":"7%","4_star":"19%","5_star":"65%"},"top_positive_themes":["Sound quality (564)","Value for money (225)"],"top_negative_themes":[],"top_mixed_themes":["Comfort (229)","Durability (119)","Fit (83)","Build quality (49)","Volume (49)","Cord length (42)"],"review_summary":"Customers find these headphones deliver excellent sound quality and consider them very good value for money. The comfort, durability, fit, build quality, volume, and cord length receive mixed feedback - while some find them comfortable and well-built, others report discomfort and durability issues. The cord length is generally appreciated, though one customer notes it's too long for portable use.","reliability_score":"mixed"},"best_offer":{"retailer":"amazon","retailer_id":"B002GHIPYI","price_usd":33.29,"original_price_usd":36.99,"affiliate_url":"https://www.indrexa.com/go/superlux-hd681-semi-open-studio-headphones-43cba864/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":"B002GHIPYI","price_usd":33.29,"original_price_usd":36.99,"affiliate_url":"https://www.indrexa.com/go/superlux-hd681-semi-open-studio-headphones-43cba864/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":"Superlux HD681 Semi-Open Studio Headphones, Wired Over-Ear with 50mm Neodymium Drivers, Single-Sided Cable, 10-30,000Hz, for Monitoring, Recording, Mixing, Podcast, Music,Black","brand":{"@type":"Brand","name":"Superlux"},"description":"The Superlux HD681 is a semi-open back, wired over-ear headphone priced at $36.99, featuring 50mm neodymium drivers, a 10–30,000 Hz frequency response, 32Ω impedance, and a 2.5-meter single-sided cable. It is best suited for studio monitoring, home mixing, recording, and podcast production where an open soundstage and accurate audio reproduction are priorities. Comfort and durability have received mixed user feedback, and the long cable makes it less practical for portable or commuting use.","sku":"43cba864-bfa4-5cef-ab44-944b9408de08","identifier":[{"@type":"PropertyValue","name":"asin","value":"B002GHIPYI"},{"@type":"PropertyValue","name":"indrexa_id","value":"43cba864-bfa4-5cef-ab44-944b9408de08"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/superlux-hd681-semi-open-studio-headphones-43cba864/amazon","priceCurrency":"USD","price":33.29,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"gtin":"887480666298 797864307863 008474924778","aggregateRating":{"@type":"AggregateRating","ratingValue":4.3,"reviewCount":4167}}}