{"id":180398,"date":"2026-04-17T10:54:15","date_gmt":"2026-04-17T02:54:15","guid":{"rendered":"https:\/\/estore.vertexhk.com\/?post_type=product&#038;p=180398"},"modified":"2026-04-17T13:14:53","modified_gmt":"2026-04-17T05:14:53","slug":"fiio-fa9-earphones-black","status":"publish","type":"product","link":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/","title":{"rendered":"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL)"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1456px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1\"><h2>FA9 Knowles 6\u2011driver balanced armature earphones (IEMs)<\/h2>\n<ul>\n<li>Knowles 6 balanced-armature driver units<\/li>\n<li>DLP 3D printing technology<\/li>\n<li>80.6 mm extra-long labyrinth sound tube (acoustic tube\/channel)<\/li>\n<li>Electronic 4-way crossover structure<\/li>\n<li>3-position tuning switch for user adjustment<\/li>\n<li>8-core single-crystal copper, silver-plated cable<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180417\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-01.jpg\" alt=\"fiio-fa9-earphones-info-01\" width=\"450\" height=\"488\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-01-64x69.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-01-200x217.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-01-277x300.jpg 277w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-01-400x434.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-01.jpg 450w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/p>\n<h2>80.6 mm extra-long sound tube &#8211; Labyrinth-style acoustic filter<\/h2>\n<p>To achieve cleaner sound performance and reduce overlap\/interference between multiple drivers, the FA9 uses an ~80 mm extra-long acoustic tube design. Acting as a low-pass filter, it effectively filters out the excess mid\/high frequencies from the bass drivers, ensuring accurate crossover performance. This enhances bass texture while also keeping the mid\u2011bass clean and smooth.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180419\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-02.jpg\" alt=\"fiio-fa9-earphones-info-02\" width=\"600\" height=\"476\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-02-64x51.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-02-200x159.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-02-300x238.jpg 300w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-02-400x317.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-02.jpg 600w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2>Diamond-cut faceplate &#8211; Semi-transparent seamless shell<\/h2>\n<p>It uses a new diamond\u2011cut\u2013style faceplate embedded in a semi\u2011transparent &#8220;glazed black&#8221; resin shell. As the lighting angle changes, it refracts light into ever\u2011changing glimmers &#8211; like scattered stars &#8211; creating a dazzling visual effect.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180403\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-03.jpg\" alt=\"fiio-fa9-earphones-info-03\" width=\"500\" height=\"462\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-03-64x59.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-03-200x185.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-03-300x277.jpg 300w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-03-400x370.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-03.jpg 500w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>Improved ergonomic shape<\/h2>\n<p>The earphone&#8217;s universal (non-custom) shell shape was derived from precise calculations based on data from tens of thousands of ear models. The design is made as compact as possible, making it easy for most people to wear comfortably.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180405\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-04.jpg\" alt=\"fiio-fa9-earphones-info-04\" width=\"500\" height=\"484\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-04-64x62.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-04-200x194.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-04-300x290.jpg 300w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-04-400x387.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-04.jpg 500w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>8-core single-crystal copper silver-plated cable<\/h2>\n<p>Comes standard with a high-quality cable, delivering excellent sound quality right away &#8211; so you don&#8217;t have to worry about upgrading.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180407\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-05.jpg\" alt=\"fiio-fa9-earphones-info-05\" width=\"500\" height=\"445\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-05-64x57.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-05-200x178.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-05-300x267.jpg 300w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-05-400x356.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-05.jpg 500w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>More great details<\/h2>\n<ul>\n<li>Universal expanded MMCX connector; earphone markings: left = blue, right = red<\/li>\n<li>3.5 mm gold-plated plug<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180409\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-06.jpg\" alt=\"fiio-fa9-earphones-info-06\" width=\"450\" height=\"473\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-06-64x67.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-06-200x210.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-06-285x300.jpg 285w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-06-400x420.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-06.jpg 450w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/p>\n<h2>Hi-Res high-quality audio certification<\/h2>\n<p>The FA9 has passed the Japan Audio Society &#8220;Hi\u2011Res AUDIO&#8221; certification, bringing you a listening experience that surpasses CD quality.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180411\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-07.jpg\" alt=\"fiio-fa9-earphones-info-07\" width=\"500\" height=\"531\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-07-64x68.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-07-200x212.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-07-282x300.jpg 282w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-07-400x425.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-07.jpg 500w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>Exquisite leather case, carefully organized storage<\/h2>\n<ul>\n<li>Faux-leather material<\/li>\n<li>Thoughtful mesh-pocket storage<\/li>\n<li>Top and bottom covers auto-magnetically latch\/close<\/li>\n<li>Soft velvet lining for protection<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180413\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-08.jpg\" alt=\"fiio-fa9-earphones-info-08\" width=\"500\" height=\"393\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-08-64x50.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-08-200x157.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-08-300x236.jpg 300w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-08-400x314.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-08.jpg 500w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<h2>A complete accessory ecosystem &#8211; Thoughtful protection inside and out<\/h2>\n<ul>\n<li>HB3 leather case<\/li>\n<li>15 pairs of ear tips (Balanced tips \u00d7 3, Bass\/low\u2011frequency tips \u00d7 3, Vocal tips \u00d7 3, SpinFit tips \u00d7 3, Foam tips \u00d7 2, Dual\u2011flange tips \u00d7 1)<\/li>\n<li>SK\u201101 magnetic cable clip<\/li>\n<li>Cleaning brush<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-180415\" src=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-09.jpg\" alt=\"fiio-fa9-earphones-info-09\" width=\"600\" height=\"341\" srcset=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-09-64x36.jpg 64w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-09-200x114.jpg 200w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-09-300x171.jpg 300w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-09-400x227.jpg 400w, https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-info-09.jpg 600w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:100% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 1.92%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 1.92%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 0px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}<\/style><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The Fiio FA9 headphones feature six Knowles balanced armature drivers on each side, delivering clear, transparent sound and a wide soundstage. The earcups are made of 3D-printed medical-grade resin, with a transparent internal cavity and an ergonomic design.<\/p>\n<ul>\n<li>American Knowles six-armature driver structure<\/li>\n<li>Three-stage switching tuning with eight adjustable frequencies<\/li>\n<li>Independent four-way crossover for low, mid, high, and ultra-high frequencies<\/li>\n<li>80.6mm extra-long acoustic nozzle<\/li>\n<li>Hi-Res audio certification<\/li>\n<li>High-purity single-crystal copper silver-plated MMCX replaceable cable<\/li>\n<li>German-imported resin DLP 3D printing<\/li>\n<li>Like a custom fit<\/li>\n<\/ul>\n","protected":false},"featured_media":180400,"template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_brand":[],"product_cat":[1842,2147,2063,1843,1893],"product_tag":[],"class_list":{"0":"post-180398","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-audio-video","7":"product_cat-clearance","8":"product_cat-fiio","9":"product_cat-headphones-earbuds","10":"product_cat-in-stock","12":"first","13":"instock","14":"sale","15":"shipping-taxable","16":"purchasable","17":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL) - Vertex<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL)\" \/>\n<meta property=\"og:description\" content=\"The Fiio FA9 headphones feature six Knowles balanced armature drivers on each side, delivering clear, transparent sound and a wide soundstage. The earcups are made of 3D-printed medical-grade resin, with a transparent internal cavity and an ergonomic design.   American Knowles six-armature driver structure  Three-stage switching tuning with eight adjustable frequencies  Independent four-way crossover for low, mid, high, and ultra-high frequencies  80.6mm extra-long acoustic nozzle  Hi-Res audio certification  High-purity single-crystal copper silver-plated MMCX replaceable cable  German-imported resin DLP 3D printing  Like a custom fit\" \/>\n<meta property=\"og:url\" content=\"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/\" \/>\n<meta property=\"og:site_name\" content=\"Vertex\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/vertexhk\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-17T05:14:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-black-01.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"HK$2,699\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/\",\"url\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/\",\"name\":\"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL) - Vertex\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/estore.vertexhk.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/fiio-fa9-earphones-black-01.jpg\",\"datePublished\":\"2026-04-17T02:54:15+00:00\",\"dateModified\":\"2026-04-17T05:14:53+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#primaryimage\",\"url\":\"https:\\\/\\\/estore.vertexhk.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/fiio-fa9-earphones-black-01.jpg\",\"contentUrl\":\"https:\\\/\\\/estore.vertexhk.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/fiio-fa9-earphones-black-01.jpg\",\"width\":1000,\"height\":1000,\"caption\":\"fiio-fa9-earphones-black-01\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/homepage\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/\",\"name\":\"Vertex\",\"description\":\"Your Trusted IT Solution Partner\",\"publisher\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Organization\",\"Place\",\"ComputerStore\"],\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/#organization\",\"name\":\"Vertex for Enterprise\",\"alternateName\":\"Vertex\",\"url\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/\",\"logo\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#local-main-organization-logo\"},\"image\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#local-main-organization-logo\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/vertexhk\"],\"address\":{\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#local-main-place-address\"},\"telephone\":[\"+852-31830600\"],\"openingHoursSpecification\":[{\"@type\":\"OpeningHoursSpecification\",\"dayOfWeek\":[\"Monday\",\"Tuesday\",\"Wednesday\",\"Thursday\",\"Friday\"],\"opens\":\"09:00\",\"closes\":\"18:00\"},{\"@type\":\"OpeningHoursSpecification\",\"dayOfWeek\":[\"Saturday\",\"Sunday\"],\"opens\":\"00:00\",\"closes\":\"00:00\"}],\"email\":\"info@vertexhk.com\",\"faxNumber\":\"Vertex Systems Limited\",\"priceRange\":\"$\",\"currenciesAccepted\":\"HKD\",\"paymentAccepted\":\"Visa \\\/ MasterCard \\\/ UnionPay\"},{\"@type\":\"PostalAddress\",\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#local-main-place-address\",\"streetAddress\":\"Room 704, 7\\\/F, Nanyang Plaza, 57 Hung To Road\",\"addressLocality\":\"Kwun Tong\",\"postalCode\":\"NA\",\"addressCountry\":\"HK\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/estore.vertexhk.com\\\/en\\\/product\\\/fiio-fa9-earphones-black\\\/#local-main-organization-logo\",\"url\":\"https:\\\/\\\/estore.vertexhk.com\\\/wp-content\\\/uploads\\\/2020\\\/06\\\/og-image-300x300px.jpg\",\"contentUrl\":\"https:\\\/\\\/estore.vertexhk.com\\\/wp-content\\\/uploads\\\/2020\\\/06\\\/og-image-300x300px.jpg\",\"width\":300,\"height\":300,\"caption\":\"Vertex for Enterprise\"}]}<\/script>\n<meta property=\"product:brand\" content=\"Audio &amp; Video\" \/>\n<meta property=\"product:price:amount\" content=\"2699\" \/>\n<meta property=\"product:price:currency\" content=\"HKD\" \/>\n<meta property=\"og:availability\" content=\"instock\" \/>\n<meta property=\"product:availability\" content=\"instock\" \/>\n<meta property=\"product:retailer_item_id\" content=\"FIIO-FA9-BL\" \/>\n<meta property=\"product:condition\" content=\"new\" \/>\n<meta name=\"geo.placename\" content=\"Kwun Tong\" \/>\n<meta name=\"geo.region\" content=\"Hong Kong\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL) - Vertex","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/","og_locale":"en_US","og_type":"article","og_title":"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL)","og_description":"The Fiio FA9 headphones feature six Knowles balanced armature drivers on each side, delivering clear, transparent sound and a wide soundstage. The earcups are made of 3D-printed medical-grade resin, with a transparent internal cavity and an ergonomic design.   American Knowles six-armature driver structure  Three-stage switching tuning with eight adjustable frequencies  Independent four-way crossover for low, mid, high, and ultra-high frequencies  80.6mm extra-long acoustic nozzle  Hi-Res audio certification  High-purity single-crystal copper silver-plated MMCX replaceable cable  German-imported resin DLP 3D printing  Like a custom fit","og_url":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/","og_site_name":"Vertex","article_publisher":"https:\/\/www.facebook.com\/vertexhk","article_modified_time":"2026-04-17T05:14:53+00:00","og_image":[{"width":1000,"height":1000,"url":"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-black-01.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Price":"HK$2,699","Availability":"In stock"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/","url":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/","name":"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL) - Vertex","isPartOf":{"@id":"https:\/\/estore.vertexhk.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#primaryimage"},"image":{"@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#primaryimage"},"thumbnailUrl":"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-black-01.jpg","datePublished":"2026-04-17T02:54:15+00:00","dateModified":"2026-04-17T05:14:53+00:00","breadcrumb":{"@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#primaryimage","url":"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-black-01.jpg","contentUrl":"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2026\/04\/fiio-fa9-earphones-black-01.jpg","width":1000,"height":1000,"caption":"fiio-fa9-earphones-black-01"},{"@type":"BreadcrumbList","@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/estore.vertexhk.com\/en\/homepage\/"},{"@type":"ListItem","position":2,"name":"Products"},{"@type":"ListItem","position":3,"name":"FiiO FA9 Six BA Driver Earphones with Detachable Cable | Black (FIIO-FA9-BL)"}]},{"@type":"WebSite","@id":"https:\/\/estore.vertexhk.com\/en\/#website","url":"https:\/\/estore.vertexhk.com\/en\/","name":"Vertex","description":"Your Trusted IT Solution Partner","publisher":{"@id":"https:\/\/estore.vertexhk.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/estore.vertexhk.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Organization","Place","ComputerStore"],"@id":"https:\/\/estore.vertexhk.com\/en\/#organization","name":"Vertex for Enterprise","alternateName":"Vertex","url":"https:\/\/estore.vertexhk.com\/en\/","logo":{"@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#local-main-organization-logo"},"image":{"@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#local-main-organization-logo"},"sameAs":["https:\/\/www.facebook.com\/vertexhk"],"address":{"@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#local-main-place-address"},"telephone":["+852-31830600"],"openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":["Monday","Tuesday","Wednesday","Thursday","Friday"],"opens":"09:00","closes":"18:00"},{"@type":"OpeningHoursSpecification","dayOfWeek":["Saturday","Sunday"],"opens":"00:00","closes":"00:00"}],"email":"info@vertexhk.com","faxNumber":"Vertex Systems Limited","priceRange":"$","currenciesAccepted":"HKD","paymentAccepted":"Visa \/ MasterCard \/ UnionPay"},{"@type":"PostalAddress","@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#local-main-place-address","streetAddress":"Room 704, 7\/F, Nanyang Plaza, 57 Hung To Road","addressLocality":"Kwun Tong","postalCode":"NA","addressCountry":"HK"},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/estore.vertexhk.com\/en\/product\/fiio-fa9-earphones-black\/#local-main-organization-logo","url":"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2020\/06\/og-image-300x300px.jpg","contentUrl":"https:\/\/estore.vertexhk.com\/wp-content\/uploads\/2020\/06\/og-image-300x300px.jpg","width":300,"height":300,"caption":"Vertex for Enterprise"}]},"product_brand":"Audio &amp; Video","product_price_amount":"2699","product_price_currency":"HKD","og_availability":"instock","product_availability":"instock","product_retailer_item_id":"FIIO-FA9-BL","product_condition":"new","geo.placename":"Kwun Tong","geo.region":"Hong Kong"},"_links":{"self":[{"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/product\/180398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/media\/180400"}],"wp:attachment":[{"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/media?parent=180398"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/product_brand?post=180398"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/product_cat?post=180398"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/estore.vertexhk.com\/en\/wp-json\/wp\/v2\/product_tag?post=180398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}