{"product_id":"im4-open-back-iem","title":"IM4 Open-Back IEM","description":"\u003ch1\u003eFosi Audio IM4 Open-Back In-Ear Monitor\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eOpen-Back Sound. Precision Metal Craftsmanship. All-Day Comfort.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eFosi Audio IM4\u003c\/strong\u003e is a high-fidelity open-back in-ear monitor designed for listeners who want a spacious, detailed and balanced sound experience. Combining a \u003cstrong\u003e10mm N52 dual-magnet dynamic driver\u003c\/strong\u003e, dual-chamber acoustic design and precision-machined CNC aluminum housing, the IM4 delivers engaging sound with a natural sense of space.\u003c\/p\u003e\n\u003cp\u003eWith its lightweight ergonomic design, detachable cable and interchangeable ear tips and nozzles, the IM4 gives you the comfort and flexibility to tailor your listening experience to your preferences.\u003c\/p\u003e\n\u003ch2\u003eSpacious Open-Back Sound\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHear your music with greater space and air.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe IM4's \u003cstrong\u003eopen-back acoustic design\u003c\/strong\u003e helps create a wider and more natural soundstage, while acoustic damping material helps control resonance and reduce harshness.\u003c\/p\u003e\n\u003cp\u003eThe result is a relaxed presentation with balanced \u003cstrong\u003ebass, mids and treble\u003c\/strong\u003e, making the IM4 suitable for music, movies, gaming and everyday listening.\u003c\/p\u003e\n\u003ch2\u003e10mm N52 Dual-Magnet Driver\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePowerful control. Detailed sound.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt the heart of the IM4 is a \u003cstrong\u003e10mm N52 dual-magnet, dual-cavity dynamic driver\u003c\/strong\u003e with a \u003cstrong\u003ePU beryllium-coated diaphragm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe N52 magnetic system provides strong driver control, while the beryllium-coated diaphragm helps deliver crisp details, controlled dynamics and an expansive soundstage.\u003c\/p\u003e\n\u003ch2\u003ePrecision CNC Aluminum Housing\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt from solid aluminum.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach IM4 housing is precision-machined from \u003cstrong\u003e6063 CNC aluminum alloy\u003c\/strong\u003e, creating a durable and refined metal body with a distinctive minimalist appearance.\u003c\/p\u003e\n\u003cp\u003eThe orange metal grille adds a unique visual accent while contributing to the IM4's open-back acoustic design.\u003c\/p\u003e\n\u003ch2\u003eDesigned for All-Day Comfort\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eLightweight. Ergonomic. Skin-friendly.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe IM4's ergonomic housing is developed using extensive ear-shape data to provide a secure and comfortable fit.\u003c\/p\u003e\n\u003cp\u003eEach earpiece weighs only approximately \u003cstrong\u003e7g\u003c\/strong\u003e, while the hollowed housing helps reduce unnecessary weight and pressure during extended listening.\u003c\/p\u003e\n\u003cp\u003eThe smooth aluminum finish also provides a comfortable, skin-friendly feel.\u003c\/p\u003e\n\u003ch2\u003eCustomise Your Sound\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFine-tune the IM4 to your listening preference.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe IM4 includes \u003cstrong\u003ethree types of ear tips\u003c\/strong\u003e — Balanced, Bass and Deep Bass — allowing you to adjust the fit and sound according to your preference.\u003c\/p\u003e\n\u003cp\u003eTwo interchangeable sound nozzles, \u003cstrong\u003eBrass and Aluminum\u003c\/strong\u003e, provide additional flexibility for fine-tuning the overall tonal character.\u003c\/p\u003e\n\u003ch2\u003eDetachable 2-Pin Cable\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible connectivity for everyday listening.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe IM4 uses a \u003cstrong\u003e0.78mm 2-pin detachable cable\u003c\/strong\u003e, allowing the cable to be replaced or upgraded when needed.\u003c\/p\u003e\n\u003cp\u003eThe included cable features \u003cstrong\u003e392 strands of 5N OFC silver-plated copper\u003c\/strong\u003e, combining flexibility with reliable signal transmission and durability.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose the Fosi Audio IM4?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOpen-back high-fidelity in-ear monitor\u003c\/li\u003e\n\u003cli\u003e10mm N52 dual-magnet dual-cavity dynamic driver\u003c\/li\u003e\n\u003cli\u003ePU beryllium-coated diaphragm\u003c\/li\u003e\n\u003cli\u003eSpacious and natural soundstage\u003c\/li\u003e\n\u003cli\u003eBalanced bass, mids and treble tuning\u003c\/li\u003e\n\u003cli\u003eAcoustic damping material for controlled resonance\u003c\/li\u003e\n\u003cli\u003ePrecision-machined 6063 CNC aluminum housing\u003c\/li\u003e\n\u003cli\u003eDistinctive orange metal grille\u003c\/li\u003e\n\u003cli\u003eErgonomic design for all-day comfort\u003c\/li\u003e\n\u003cli\u003eApproximately 7g per earpiece\u003c\/li\u003e\n\u003cli\u003eSkin-friendly smooth metal finish\u003c\/li\u003e\n\u003cli\u003eThree interchangeable ear tip types\u003c\/li\u003e\n\u003cli\u003eBass, Deep Bass and Balanced ear tips\u003c\/li\u003e\n\u003cli\u003eBrass and Aluminum interchangeable nozzles\u003c\/li\u003e\n\u003cli\u003e0.78mm 2-pin detachable cable\u003c\/li\u003e\n\u003cli\u003e5N OFC silver-plated copper cable\u003c\/li\u003e\n\u003cli\u003e3.5mm gold-plated audio plug\u003c\/li\u003e\n\u003cli\u003e21Ω impedance\u003c\/li\u003e\n\u003cli\u003e109dB sensitivity\u003c\/li\u003e\n\u003cli\u003e20Hz–20kHz frequency response\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver\u003c\/td\u003e\n\u003ctd\u003e10mm N52 Dual-Magnet Dual-Cavity Dynamic Driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiaphragm\u003c\/td\u003e\n\u003ctd\u003ePU Beryllium-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShell Material\u003c\/td\u003e\n\u003ctd\u003e6063 CNC Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eOpen-Back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e21Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e109dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20Hz–20kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable\u003c\/td\u003e\n\u003ctd\u003e4-Core 392-Strand 5N OFC Silver-Plated Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e2-Pin 0.78mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Jack\u003c\/td\u003e\n\u003ctd\u003e3.5mm Gold-Plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7g ±0.5g per earbud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e38g ±1g including cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFosi Audio IM4 Earphones\u003c\/li\u003e\n\u003cli\u003e3.5mm Cable\u003c\/li\u003e\n\u003cli\u003eCarrying Pouch\u003c\/li\u003e\n\u003cli\u003eUser Manual\u003c\/li\u003e\n\u003cli\u003eQuick Guide\u003c\/li\u003e\n\u003cli\u003eBrass Nozzle\u003c\/li\u003e\n\u003cli\u003eBalanced Ear Tips\u003c\/li\u003e\n\u003cli\u003eBass Ear Tips\u003c\/li\u003e\n\u003cli\u003eDeep Bass Ear Tips\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosi Audio","offers":[{"title":"Black","offer_id":45129001861186,"sku":null,"price":169.0,"currency_code":"SGD","in_stock":true},{"title":"Silver","offer_id":45129001893954,"sku":null,"price":169.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/6523\/2706\/files\/ChatGPT_Image_Sep_1_2026_05_27_34_PM.png?v=1788254894","url":"https:\/\/www.connect-it.com.sg\/products\/im4-open-back-iem","provider":"ConnectIT","version":"1.0","type":"link"}