{"product_id":"fosi-audio-i5-open-back-planar-magnetic-headphones","title":"Fosi Audio i5 Open-Back Planar Magnetic Headphones","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eImmersive Listening, Pure Original Sound\u003c\/strong\u003e : Experience studio-grade audio fidelity with nano-thin diaphragm and stealth magnets. Precision acoustics deliver high-resolution, low-distortion sound for live-performance realism\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e97mm Ultra-Large Diaphragm\u003c\/strong\u003e : Industry-leading 97mm driver at 2μm thickness reveals microscopic details. Magnetron-sputtered silver alloy coating enhances clarity while ensuring long-term sonic consistency and durability\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eErgonomic Design, Long-Lasting Comfort\u003c\/strong\u003e : Memory-steel headband with multi-axis pivoting earcups adapts instantly. Silicone sliders enable micro-adjustments. Breathable protein leather ear pads eliminate fatigue during extended sessions\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eRefined Craftsmanship\u003c\/strong\u003e : Handcrafted walnut wood chambers paired with CNC-milled aluminum frame. Genuine sheepskin headband and signature S-design accents exude understated luxury and timeless sophistication\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePrecision Magnetic Control\u003c\/strong\u003e : 44 N50 neodymium magnets ensure razor-sharp transients. Acoustically transparent open-back grille minimizes resonance for expansive, holographic soundstage with studio-grade accuracy\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"word\" data-word=\"Fosi\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 class=\"banner__title heading leading-none title-sm image-overlay-text-responsive mobile-font-heading_PqCND9\"\u003e\u003cstrong\u003e\u003cspan class=\"word\" data-word=\"Fosi\"\u003eFosi\u003c\/span\u003e\u003cspan class=\"whitespace\"\u003e \u003c\/span\u003e\u003cspan class=\"word\" data-word=\"Audio\"\u003eAudio\u003c\/span\u003e\u003cspan class=\"whitespace\"\u003e \u003c\/span\u003e\u003cspan class=\"word\" data-word=\"i5\"\u003ei5\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"rte leading-normal body subtext-md image-overlay-text-responsive mobile-font-text_pJHK3X\"\u003e\n\u003cp\u003eOpen-Back Planar Magnetic Headphones for HiFi Audiophiles\u003c\/p\u003e\n\u003ch2 class=\"heading leading-none title-sm\"\u003e\u003cstrong\u003e\u003cspan class=\"word\" data-word=\"Democratizing\"\u003eDemocratizing\u003c\/span\u003e\u003cspan class=\"whitespace\"\u003e \u003c\/span\u003e\u003cspan class=\"word\" data-word=\"Planar\"\u003ePlanar\u003c\/span\u003e\u003cspan class=\"whitespace\"\u003e \u003c\/span\u003e\u003cspan class=\"word\" data-word=\"Sound\"\u003eSound\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv class=\"rte leading-normal body subtext-sm\"\u003e\n\u003cp\u003eThe i5 was born from our mission to make planar magnetic headphones more accessible—without compromising on sound quality, comfort, or design. Over a year of in-house development and acoustic tuning led to a headphone that delivers exceptional clarity, low distortion, and lifelike detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rte leading-normal body subtext-sm\"\u003e\n\u003cul\u003e\n\u003cli\u003eTransducer Type: Planar Magnetic Transducer\u003c\/li\u003e\n\u003cli\u003eMaximum SPL: ≥ 120 dBSPL\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 10 - 50,000 Hz; THD: \u0026lt; 1% @100dBSPL\u003c\/li\u003e\n\u003cli\u003eSensitivity: 98 dB\/mW @1kHz; Nominal Impedance: 28 Ω\u003c\/li\u003e\n\u003cli\u003eRecommended Power: ≥ 500 mW\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"aplus-h1 a-text-bold\"\u003e\u003cstrong\u003eImmersive Listening, Pure Original Sound\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"description aplus-p1\"\u003eNano-thin diaphragm,symmetrical magnets\u0026amp;precision acoustics deliver high-res, low-distortion sound.\u003c\/p\u003e\n\u003ch2 class=\"aplus-h1 a-text-bold\"\u003e\u003cstrong\u003eDurable Memory Metal Headband\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"description aplus-p1\"\u003eHigh-strength memory metal headband stays shaped, lightweight \u0026amp; flexible for pressure-free comfort.\u003c\/p\u003e\n\u003ch2 class=\"aplus-h1 a-text-bold\"\u003e\u003cstrong\u003eUltimate Hi-Fi Stack: DAC+Amp+i5 Headphones\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"description aplus-p1\"\u003eDAC+Amp+i5 headphones deliver pristine audio\u0026amp;endless musical immersion with studio-grade precision.\u003c\/p\u003e\n\u003ch1\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\n\u003ctable style=\"width: 100%; height: 712px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eFosi \u003c\/span\u003e\u003cspan\u003eAudio\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003ei5\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eOver-Ear \u003c\/span\u003e\u003cspan\u003eHeadphones\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eHeadphone Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eOpen-Back, \u003c\/span\u003e\u003cspan\u003eWired\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eDriver Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003ePlanar \u003c\/span\u003e\u003cspan\u003eMagnetic\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eDriver Size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e97mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eDiaphragm Thickness\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e2μm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; 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height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e≥500mW\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eConnectivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eWired\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eCable Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eDetachable\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eWalnut \u003c\/span\u003e\u003cspan\u003eWood, \u003c\/span\u003e\u003cspan\u003eAluminium \u003c\/span\u003e\u003cspan\u003eand \u003c\/span\u003e\u003cspan\u003eMetal\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eEar Cup Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eOver-Ear\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eMicrophone\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 69.4779%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eNot \u003c\/span\u003e\u003cspan\u003eBuilt-In\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 30.3475%; 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