{"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 a wired, open-back planar magnetic headphone priced at $219.99, featuring a 95x86mm proprietary flat driver unit with a 1μm ultra-thin PET diaphragm and sapphire-aluminum dual coating, weighing approximately 374g (13.2oz) with 20-ohm impedance and frequency response extending up to 40kHz. It is designed for home listening and studio use, offering a wide soundstage and high-resolution audio performance. However, some users report issues with muffled sound, bass distortion, comfort, and build quality defects, so prospective buyers should be aware of inconsistent quality control.","best_for_summary":"Best for home audiophiles and studio listeners who want an affordable entry into planar magnetic headphones with a wide soundstage and extended high-frequency response.","not_ideal_for":["Commuters or travelers needing passive noise isolation","Listeners who prioritize deep, accurate bass response","Buyers requiring wireless or hands-free microphone functionality"],"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":214,"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":{"retailer":"amazon","retailer_id":"B0DM61CHW6","price_usd":219.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/fiio-ft1-pro-open-back-planar-b9cd7aa2/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":"B0DM61CHW6","price_usd":219.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/fiio-ft1-pro-open-back-planar-b9cd7aa2/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":"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 a wired, open-back planar magnetic headphone priced at $219.99, featuring a 95x86mm proprietary flat driver unit with a 1μm ultra-thin PET diaphragm and sapphire-aluminum dual coating, weighing approximately 374g (13.2oz) with 20-ohm impedance and frequency response extending up to 40kHz. It is designed for home listening and studio use, offering a wide soundstage and high-resolution audio performance. However, some users report issues with muffled sound, bass distortion, comfort, and build quality defects, so prospective buyers should be aware of inconsistent quality control.","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":219.99,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.2,"reviewCount":214}}}