{"indrexa_id":"b9cd7aa2-3d75-5975-8216-520fda006df5","category_id":"headphones","product_title":"FiiO FT1 Pro Open-Back Planar Magnetic Wired Hi-Fi Headphones for Home, Studio, Recording, High Sensitivity (Black)","brand":"FiiO","upc":null,"asin":"B0DM61CHW6","semantic_description":"The FiiO FT1 Pro is an open-back, over-ear planar magnetic headphone featuring a large 95x86mm in-house developed flat driver unit with a 1μm ultra-thin PET diaphragm and a proprietary sapphire-plus-aluminum dual-coating technology. It weighs approximately 374g, operates at 20 ohms impedance, and extends frequency response up to 40kHz, making it suited for home listening, studio monitoring, and critical audio work where a wide soundstage is valued. User feedback is mixed on sound quality and comfort, with some reports of bass distortion and build quality defects that prospective buyers should weigh carefully.","best_for_summary":"Best for home and studio listeners seeking an entry into planar magnetic audio with a wide soundstage and high-resolution frequency extension, who don't need portability or wireless connectivity.","not_ideal_for":["Commuters or travelers needing portability and passive noise isolation","Users who require wireless or Bluetooth connectivity","Listeners sensitive to bass distortion or who prioritize deep, impactful low-end performance"],"use_case_tags":["home","studio","audiophile","premium-audio"],"buyer_profile_tags":["audiophile","music-producer","casual-listener"],"manufacturer_description":"95x86mm FiiO- Developed Flat Unit: The FT1 Pro unit measures 95x86mm, a size comparable to flagship heavy-duty flat earphones, yet it weighs only about 374g. Leveraging the advantages of the in-house developed flat unit, the T1 Pro delivers an exceptionally wide lateral soundstage rarely seen in its class, with almost imperceptible boundaries, effortlessly unlocking a full frequency response up to 40kHz.1μm Ultra-Thin Diaphragm: After two years of independent research and development, the FiiO FT1 Pro features a leading 1μm ultra-thin diaphragm, made from high-performance PET substrate. In the microscopic world, even a difference of 2μm versus 1μm in diaphragm thickness leads to significant performance variations under high-speed vibrations, directly affecting the final sound quality.Sapphire + Aluminum Dual-Coating Patent Technology: The diaphragm uses a dual-coating of sapphire and aluminium to enhance frequency response across different bands, improving audio resolution and allowing for a more detailed sound from the flat unit. The sapphire coating, known for its high hardness, effectively boosts high-frequency resolution, while the aluminium coating, lightweight in nature, improves the voice coil's conductivity.Uniform Magnetic Field Design: The magnetic field strength between adjacent magnets has been optimised to eliminate unevenness, further expanding the magnetic field range. When the flat diaphragm vibrates at high speeds, the FT1 Pro ensures uniform diaphragm amplitude, reducing segmented vibrations and distortion. This results in more refined sound performance, allowing for precise capture of the subtle nuances in the music.28-Nanometer Chip-Level Manufacturing Process: This process, derived from semiconductor industry coating technologies, forms the necessary coating thickness for acoustics and significantly strengthens the durability and lifespan of the conductive coils. Each diaphragm undergoes this process twice to meet the dual-coating diaphragm design, delivering superior sound quality beyond its class.","feature_bullets":["95x86mm FiiO- Developed Flat Unit: The FT1 Pro unit measures 95x86mm, a size comparable to flagship heavy-duty flat earphones, yet it weighs only about 374g. Leveraging the advantages of the in-house developed flat unit, the T1 Pro delivers an exceptionally wide lateral soundstage rarely seen in its class, with almost imperceptible boundaries, effortlessly unlocking a full frequency response up to 40kHz.","1μm Ultra-Thin Diaphragm: After two years of independent research and development, the FiiO FT1 Pro features a leading 1μm ultra-thin diaphragm, made from high-performance PET substrate. In the microscopic world, even a difference of 2μm versus 1μm in diaphragm thickness leads to significant performance variations under high-speed vibrations, directly affecting the final sound quality.","Sapphire + Aluminum Dual-Coating Patent Technology: The diaphragm uses a dual-coating of sapphire and aluminium to enhance frequency response across different bands, improving audio resolution and allowing for a more detailed sound from the flat unit. The sapphire coating, known for its high hardness, effectively boosts high-frequency resolution, while the aluminium coating, lightweight in nature, improves the voice coil's conductivity.","Uniform Magnetic Field Design: The magnetic field strength between adjacent magnets has been optimised to eliminate unevenness, further expanding the magnetic field range. When the flat diaphragm vibrates at high speeds, the FT1 Pro ensures uniform diaphragm amplitude, reducing segmented vibrations and distortion. This results in more refined sound performance, allowing for precise capture of the subtle nuances in the music.","28-Nanometer Chip-Level Manufacturing Process: This process, derived from semiconductor industry coating technologies, forms the necessary coating thickness for acoustics and significantly strengthens the durability and lifespan of the conductive coils. Each diaphragm undergoes this process twice to meet the dual-coating diaphragm design, delivering superior sound quality beyond its class."],"spec_table":[{"field":"Brand","value":"FiiO"},{"field":"Color","value":"BLACK"},{"field":"Ear Placement","value":"Over Ear"},{"field":"Form Factor","value":"Over Ear"},{"field":"Impedance","value":"20 Ohms"}],"bought_in_past_month":null,"variants":["B0DM61CHW6","B0F1Y3NVVW"],"shipping_amount":"FREE","manufacturer":"FiiO","climate_pledge_friendly":false,"category_specs":{"is_foldable":false,"is_wireless":false,"is_open_back":true,"impedance_ohms":20,"has_wired_option":true,"has_transparency_mode":false,"has_multipoint_connection":false,"has_active_noise_cancellation":false},"review_intelligence":{"total_reviews":228,"average_rating":4.2,"rating_distribution":{"1_star":"8%","2_star":"6%","3_star":"6%","4_star":"10%","5_star":"70%"},"top_positive_themes":["Value for money (30)","Weight (11)","Cable quality (9)"],"top_negative_themes":[],"top_mixed_themes":["Sound quality (59)","Build quality (38)","Comfort (29)","Design (11)","Noise (8)"],"review_summary":"Customers find these headphones good value for money and appreciate their lightweight design and nice cables, including a 4.4mm option. The sound quality receives mixed feedback - while some praise the soundstage and midrange, others report issues with muffled sound and bass distortion. Customers disagree on comfort, with some finding them soft on the skin while others find them uncomfortable. The build quality and design also receive mixed reviews, with some describing them as excellent while others report quality defects and design flaws.","reliability_score":"mixed"},"best_offer":null,"all_offers":[{"retailer":"amazon","retailer_id":"B0DM61CHW6","price_usd":154.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/fiio-ft1-pro-open-back-planar-b9cd7aa2/amazon","in_stock":false,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-07-18T08:45:55.660074+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":"FiiO FT1 Pro Open-Back Planar Magnetic Wired Hi-Fi Headphones for Home, Studio, Recording, High Sensitivity (Black)","brand":{"@type":"Brand","name":"FiiO"},"description":"The FiiO FT1 Pro is an open-back, over-ear planar magnetic headphone featuring a large 95x86mm in-house developed flat driver unit with a 1μm ultra-thin PET diaphragm and a proprietary sapphire-plus-aluminum dual-coating technology. It weighs approximately 374g, operates at 20 ohms impedance, and extends frequency response up to 40kHz, making it suited for home listening, studio monitoring, and critical audio work where a wide soundstage is valued. User feedback is mixed on sound quality and comfort, with some reports of bass distortion and build quality defects that prospective buyers should weigh carefully.","sku":"b9cd7aa2-3d75-5975-8216-520fda006df5","identifier":[{"@type":"PropertyValue","name":"asin","value":"B0DM61CHW6"},{"@type":"PropertyValue","name":"indrexa_id","value":"b9cd7aa2-3d75-5975-8216-520fda006df5"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/fiio-ft1-pro-open-back-planar-b9cd7aa2/amazon","priceCurrency":"USD","price":154.99,"availability":"https://schema.org/OutOfStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.2,"reviewCount":228}}}