{"product_id":"fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems","title":"FiiO FX17 1 Dynamic, 4 BA, 8 Electrostatic Driver IEMs","description":"\u003cp\u003eThe FiiO FX17 is FiiO’s flagship in-ear monitor, distilled from 18 years of acoustic experience. Each earpiece holds 13 drivers: a 10mm lithium-magnesium alloy dynamic driver, four custom Knowles balanced armatures and eight Sonion electrostatic drivers, joined by an electronic and physical five-way crossover, FiiO’s S.Turbo bass design and a tuned rear cavity, in shells milled from pure titanium. A gold, silver and copper cable with three twist-lock plugs (3.5mm, 4.4mm and a USB-C DAC) and 22 pairs of ear tips are included, and every pair carries a serial-numbered nameplate. It is Hi-Res Audio certified and won a VGP 2025 Summer award.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-hero.jpg?v=1791325528\" alt=\"FiiO FX17 flagship in-ear monitor in titanium\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003e1 dynamic, 4 balanced armature, 8 electrostatic\u003c\/h3\u003e\n\u003cp\u003eA precisely tuned five-way crossover balances the energy between the 13 drivers per side so each works at its best, for a grander soundstage and a more natural sound.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-exploded.jpg?v=1791325533\" alt=\"Exploded view of the FiiO FX17: titanium shell, drivers, crossover and voltage amplifier\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eEight electrostatic drivers\u003c\/h3\u003e\n\u003cp\u003eElectrostatic drivers extend easily to 50kHz and add a sense of air and a grander soundstage, but their sensitivity is only about 99dB\/mW against the 110dB\/mW typical of balanced armature and dynamic drivers, so the louder low frequencies can mask them. The FX17 therefore uses eight Sonion electrostatics per side, with their own voltage amplifier, to raise their level so they are clearly heard as they handle everything above 6kHz, rather than being there for show.\u003c\/p\u003e\n\u003ch3\u003eFour custom Knowles balanced armatures\u003c\/h3\u003e\n\u003cp\u003eTwo Knowles composite units, each split into a mid and a mid-high section, cover the mids and highs, for denser mids, a more transparent sound and a seamless hand-over to the electrostatics. For flagship vocals, FiiO and Knowles developed a midrange-enhanced armature with acoustic vents in its rear cavity, giving it more sound energy for lush, mellow vocals that put the singer right beside you.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-knowles.jpg?v=1791325539\" alt=\"The Knowles balanced armatures in the FiiO FX17 and their frequency response\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eLithium-magnesium dynamic driver\u003c\/h3\u003e\n\u003cp\u003eLithium-magnesium alloy is light and rigid, with a density of just 1.6g\/cm³, making it an ideal diaphragm material second only to beryllium. Its high internal damping greatly reduces resonance and distortion when reproducing fast high-frequency signals, keeping distortion to 0.2% or less for a truly clean sound.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-limg.jpg?v=1791325545\" alt=\"The lithium-magnesium alloy dynamic driver of the FiiO FX17\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eS.Turbo bass and a tuned rear cavity\u003c\/h3\u003e\n\u003cp\u003eFiiO’s patented S.Turbo design (patent ZL2018211416279), inspired by supercar turbos, guides sound through a turbo-shaped structure for robust, deep bass while filtering excess mids and highs from the dynamic driver for a smooth transition. Behind the driver, vents just 0.2mm across control the airflow and balance the air damping between front and rear cavities, improving the driver’s Q factor and movement, extending the bass and making the mids clearer.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-sturbo.jpg?v=1791325550\" alt=\"Cutaway of the FiiO FX17 showing the S.Turbo bass tube\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-vents.jpg?v=1791325556\" alt=\"Airflow through the FiiO FX17 rear cavity vents\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eAn electronic and physical five-way crossover\u003c\/h3\u003e\n\u003cp\u003eAs FiiO’s engineers explain: the FX15’s switch for its electrostatics proved they are not decoration but essential to a wide treble range. The FX17 raises the count to eight per side, covering everything above 6kHz and reducing the power they need, and uses an electronic and physical dual-system five-way crossover for precise control: a smooth frequency response, a flat impedance curve for wide compatibility, and balanced energy and smooth transitions at both low and high volumes.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-cutaway.jpg?v=1791325561\" alt=\"Cutaway of the FiiO FX17 drivers and crossover\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003ePure titanium, two finishes\u003c\/h3\u003e\n\u003cp\u003eThe classic, naturally curved shell is high-density, high-strength titanium, milled from a single block, hand-polished and hardened with vapour deposition for a lustrous finish. Choose Titanium, with a matte, sandblasted texture that resists fingerprints and scratches, or Silver, with a smooth mirror finish.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-silver.jpg?v=1791325567\" alt=\"FiiO FX17 in Silver\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-titanium.jpg?v=1791325572\" alt=\"FiiO FX17 in Titanium and Silver\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ch3\u003eA flagship “comfort zone”\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10° nozzle:\u003c\/strong\u003e after user feedback and research, the nozzle angle is raised 10° on the Y-axis (same length), for a more comfortable, stable fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnug fit:\u003c\/strong\u003e a more three-dimensional back shell with a 1.4mm ear-conforming ridge in the concha, refined over hundreds of tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess pressure:\u003c\/strong\u003e about 1mm thinner where it meets the fold of your ear, so it feels as if nothing is there.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGold, silver and copper cable, three plugs\u003c\/h3\u003e\n\u003cp\u003eThe cable has 8 strands, 360 wires in all, mixing gold, silver and copper, each forged at over 1,000° and refined a second time into monocrystals to remove impurities and reduce loss, combining the strengths of each metal. Expanded MMCX connectors attach it, and twist-lock plugs swap between 3.5mm, 4.4mm (fitted) and USB-C. The USB-C plug has its own DSP and DAC for up to 32-bit\/384kHz PCM with balanced output, and an 8-band PEQ you can set, save and share in the FiiO Control app (Android) or FiiO’s web tool.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-3.jpg?v=1791146109\" alt=\"FiiO FX17 cable with its 3.5mm, 4.4mm and USB-C plugs\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003cth\u003eUSB-C plug\u003c\/th\u003e\n\u003ctd\u003eUp to 32-bit\/384kHz · up to 55mW per channel @ 16Ω, 30mW @ 32Ω · SNR \u0026gt;122dB · noise floor \u0026lt;0.8µV · distortion \u0026lt;0.001% · crosstalk −110dB\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eSerial-numbered, with 22 pairs of tips\u003c\/h3\u003e\n\u003cp\u003eEach FX17 comes with an exclusive engraved, serial-numbered nameplate, and 22 pairs of ear tips, including FiiO’s HS18 and HS20 liquid silicone tips and SpinFit.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-nameplate.jpg?v=1791325578\" alt=\"The serial-numbered nameplate of the FiiO FX17\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems-photo-case.jpg?v=1791325583\" alt=\"FiiO FX17 in its case\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eDrivers per side\u003c\/th\u003e\n\u003ctd\u003e10mm lithium-magnesium dynamic · 4 custom Knowles BA · 8 Sonion electrostatic · five-way crossover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImpedance and sensitivity\u003c\/th\u003e\n\u003ctd\u003e16Ω · 104dB\/mW (1kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency response\u003c\/th\u003e\n\u003ctd\u003e8Hz–40kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable\u003c\/th\u003e\n\u003ctd\u003eAbout 1.2m · 8 strands, 360 gold, silver and copper wires · expanded MMCX · twist-lock 3.5mm, 4.4mm and USB-C plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShell and weight\u003c\/th\u003e\n\u003ctd\u003ePure titanium · about 12.2g per earpiece (without cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinishes\u003c\/th\u003e\n\u003ctd\u003eTitanium (matte) or Silver (mirror)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eGood to know\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe USB-C plug doesn’t support UAC 1.0, so it won’t work with Xbox, Switch or PlayStation consoles; use the 3.5mm or 4.4mm plug with those. App PEQ is Android only (the web tool works on any computer).\u003c\/li\u003e\n\u003cli\u003eThe 22 pairs of tips include foam, bass and balanced (M fitted) tips as well as HS18, HS20 and SpinFit; see the box list.\u003c\/li\u003e\n\u003cli\u003eFor FiiO’s first electrostatic IEM, with a switch to compare, see the \u003ca href=\"\/products\/fiio-fx15-six-driver-hybrid-in-ear-monitors\"\u003eFiiO FX15\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FiiO","offers":[{"title":"SILVER","offer_id":57117418094979,"sku":"FIIOFX17-SILVER","price":1499.0,"currency_code":"GBP","in_stock":true},{"title":"TITANIUM","offer_id":57117418127747,"sku":"FIIOFX17-TITANIUM","price":1499.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/3199\/8339\/files\/img_proxy_bdfe50cc-da1a-4008-b448-e2b975ef06a0.jpg?v=1767212474","url":"https:\/\/www.advancedmp3players.co.uk\/products\/fiio-fx17-1-dynamic-4-ba-8-electrostatic-driver-iems","provider":"amp3","version":"1.0","type":"link"}