{"product_id":"fosi-audio-im4","title":"Fosi Audio IM4 Open-Back In-Ear Monitor | Natural Sound IEMs for Audiophiles","description":"\u003ch1\u003eFosi Audio IM4: Expansive Sound in a Compact Design\u003c\/h1\u003e\n\u003cp data-path-to-node=\"11\"\u003eThe Fosi Audio IM4 is a revolutionary In-Ear Monitor (IEM) that brings the natural, airy acoustics of open-back headphones into a portable in-ear design. Engineered for critical listening and audio enthusiasts, the IM4 delivers an exceptionally wide soundstage and precise imaging.\u003c\/p\u003e\n\u003ch2\u003e\u003cb\u003eKey Features \u0026amp; Acoustic Design\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul data-path-to-node=\"13\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,0,0\"\u003e\u003cb\u003eInnovative Open-Back Architecture:\u003c\/b\u003e Unlike typical sealed IEMs, the IM4 features a unique open-back structure. This design significantly reduces pressure build-up and delivers a more open, spacious, and natural sound presentation, minimizing the \"in-your-head\" feeling common with traditional monitors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,1,0\"\u003e\u003cb\u003eHigh-Fidelity Dynamic Driver:\u003c\/b\u003e The IM4 utilizes a large, high-performance dynamic driver capable of delivering deep, controlled bass, a rich and textured midrange, and crisp, extended high frequencies. The sound signature is balanced and transparent, designed for accurate audio reproduction.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,2,0\"\u003e\u003cb\u003eErgonomic and Comfortable Fit:\u003c\/b\u003e Built with lightweight materials and an ergonomic housing shape, the IM4 ensures long-term comfort for extended listening sessions. The secure fit provides good passive noise isolation while maintaining the intended open sound quality.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,3,0\"\u003e\u003cb\u003eDetachable Cable for Upgradeability:\u003c\/b\u003e The IEMs feature a standard, reliable connector (e.g., 2-pin or MMCX, depending on the model specification) that allows users to easily replace the cable or upgrade to a balanced cable for use with high-quality DACs and amplifiers, maximizing performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"13,4,0\"\u003e\u003cb\u003ePremium Build Quality:\u003c\/b\u003e Constructed with durable materials, the Fosi Audio IM4 is designed to withstand daily use. The included cable is designed for low microphonics, ensuring a clean signal path and minimal interference during movement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"14\"\u003eThe Fosi Audio IM4 is the ideal choice for audiophiles seeking an IEM that combines the intimacy of an in-ear monitor with the expansive soundstage and natural acoustics of a high-end open-back headphone.\u003c\/p\u003e","brand":"Fosi Audio","offers":[{"title":"Galaxy","offer_id":43831742005341,"sku":null,"price":119.0,"currency_code":"USD","in_stock":true},{"title":"Obsidian","offer_id":43831742038109,"sku":null,"price":119.0,"currency_code":"USD","in_stock":true},{"title":"DS3+IM4-Galaxy","offer_id":43831742070877,"sku":null,"price":239.0,"currency_code":"USD","in_stock":true},{"title":"DS3+IM4 -0bsidian","offer_id":43831742103645,"sku":null,"price":239.0,"currency_code":"USD","in_stock":true},{"title":"IM4 4.4mm Audio Cable","offer_id":43831742136413,"sku":null,"price":39.0,"currency_code":"USD","in_stock":true},{"title":"IM4 3.5mm Audio Cable","offer_id":43831742169181,"sku":null,"price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0604\/7422\/8829\/files\/FosiAudioIM4-001.webp?v=1764216548","url":"https:\/\/emiuzek.com\/ja\/products\/fosi-audio-im4","provider":"EMiUZEK","version":"1.0","type":"link"}