{"product_id":"fiio-gigas1-class-ab","title":"FiiO GIGAS1 Desktop Headphone Amplifier — Class AB Discrete Transistor","description":"\u003ch2\u003eFiiO GIGAS1 — Desktop-Grade Power in a Compact Footprint\u003c\/h2\u003e\n\u003cp\u003eThe FiiO GIGAS1 is a compact, high-power desktop headphone amplifier built specifically to unlock the full potential of entry-level planar headphones and demanding full-size cans. Inspired by the Greek word “GIGAS” meaning “giant,” the GIGAS Series was born from a simple mission: deliver massive driving power at an affordable price, so you never have to compromise on sound quality.\u003c\/p\u003e\n\u003cp\u003eEncased in a sleek anodized aluminum alloy chassis, the GIGAS1 utilizes a discrete Class AB transistor current-amplification circuit to deliver up to \u003cstrong\u003e4600mW + 4600mW balanced output\u003c\/strong\u003e — effortlessly driving everything from sensitive IEMs to low-sensitivity planar headphones.\u003c\/p\u003e\n\n\u003ch2\u003eClass AB Discrete Transistor Circuit — Smooth, Natural, Powerful\u003c\/h2\u003e\n\u003cp\u003eMeticulously engineered with a discrete amplification circuit using an \u003cstrong\u003eop-amp + transistor current-amplification design\u003c\/strong\u003e, the GIGAS1 pairs classic \u003cstrong\u003eonsemi MJE243G \/ MJE253G\u003c\/strong\u003e transistors (4 of each) for high-current, low-impedance output. The result is a smooth, natural, and melodious sound with the headroom to drive virtually any headphone in your collection.\u003c\/p\u003e\n\n\u003ch2\u003eDual Headphone Outputs — 4.4mm Balanced + 3.5mm Single-Ended\u003c\/h2\u003e\n\u003cp\u003eFeaturing both a \u003cstrong\u003e4.4mm balanced\u003c\/strong\u003e and a \u003cstrong\u003e3.5mm single-ended\u003c\/strong\u003e headphone output, the GIGAS1 offers wide compatibility with a diverse range of headphones. The 3.5mm jack also supports \u003cstrong\u003eCTIA-compliant microphone passthrough\u003c\/strong\u003e — ideal for gaming voice chat, calls, and multimedia entertainment.\u003c\/p\u003e\n\n\u003ch2\u003eDual Input Ports — 3.5mm + RCA\u003c\/h2\u003e\n\u003cp\u003eEquipped with both a \u003cstrong\u003e3.5mm jack\u003c\/strong\u003e and \u003cstrong\u003eRCA inputs\u003c\/strong\u003e, the GIGAS1 connects seamlessly to digital audio players, smartphones, computers, and CD players. Whether for HiFi music listening or desktop multimedia entertainment, it ensures a stable connection with zero limitations on your audio sources.\u003c\/p\u003e\n\n\u003ch2\u003eTwo Adjustable Gain Levels\u003c\/h2\u003e\n\u003cp\u003eA mechanical toggle switch easily alternates between \u003cstrong\u003ehigh and low gain\u003c\/strong\u003e settings, accommodating high-sensitivity IEMs as well as low-sensitivity planar and high-impedance full-size headphones. One amp, any headphone.\u003c\/p\u003e\n\n\u003ch2\u003eType-C Dual-Mode Power Supply — 5V or PD 12V\u003c\/h2\u003e\n\u003cp\u003eThe GIGAS1 accepts both standard \u003cstrong\u003e5V USB power\u003c\/strong\u003e and \u003cstrong\u003e12V PD power\u003c\/strong\u003e, automatically adapting between modes. Powering via a computer or 5V adapter is sufficient for most headphones. Connecting a 12V PD supply fully unleashes the amplifier’s peak performance — delivering a massive leap in driving power, dynamics, and soundstage.\u003c\/p\u003e\n\n\u003ch2\u003eMinimalist Aluminum Alloy Design — Three Color Options\u003c\/h2\u003e\n\u003cp\u003eAvailable in \u003cstrong\u003eBlack, Silver, and Green\u003c\/strong\u003e, the anodized aluminum alloy chassis features vibrant colors with a premium finely textured finish. Paired with a warm retro lighting effect, the GIGAS1 blends into any desktop setup — minimalist workspace, vintage rig, or high-performance gaming station. An oversized volume knob and mechanical toggle switches make operation intuitive right out of the box.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eColors\u003c\/td\u003e\n\u003ctd\u003eBlack \/ Silver \/ Green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e132 × 60 × 40mm (excl. feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~210g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003e5V−2A (Type-C) \/ PD 12V−2A (Type-C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e3.5mm jack + RCA jacks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e4.4mm balanced + 3.5mm single-ended (CTIA mic passthrough)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadphone Amp\u003c\/td\u003e\n\u003ctd\u003eonsemi MJE243G ×4 + MJE253G ×4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Impedance\u003c\/td\u003e\n\u003ctd\u003e8–350Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20Hz–200kHz (\u0026lt;0.4dB attenuation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSNR\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;118dB (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Floor\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10.6μV (A-weighted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.00057% (1kHz \/ −5dB @ 32Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e5V Power Input\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced (32Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥580mW + 580mW (THD+N\u0026lt;1%, 4.3Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced (16Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥790mW + 790mW (THD+N\u0026lt;1%, 3.6Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle-Ended (32Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥170mW + 170mW (THD+N\u0026lt;1%, 2.3Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle-Ended (16Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥280mW + 280mW (THD+N\u0026lt;1%, 2.1Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003ePD 12V Power Input\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced (32Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥4600mW + 4600mW (THD+N\u0026lt;1%, 12.1Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced (16Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥3300mW + 3300mW (THD+N\u0026lt;1%, 7.3Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced (300Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥740mW + 740mW (THD+N\u0026lt;1%, 14.9Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle-Ended (32Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥1400mW + 1400mW (THD+N\u0026lt;1%, 6.7Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle-Ended (16Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥2200mW + 2200mW (THD+N\u0026lt;1%, 5.9Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle-Ended (300Ω)\u003c\/td\u003e\n\u003ctd\u003eL+R ≥185mW + 185mW (THD+N\u0026lt;1%, 7.5Vrms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFiiO GIGAS1 Headphone Amplifier × 1\u003c\/li\u003e\n\u003cli\u003eUSB Power Cable × 1\u003c\/li\u003e\n\u003cli\u003eQuick Start Guide × 1\u003c\/li\u003e\n\u003cli\u003eWarranty Card × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S076f67a1f5aa47f180ea54b0cbd71f1eK.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S75b3887044dd4c4d8b87248e346772e9t.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc9c15d2b9a4c421b95c78a4b16c76089B.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S84b484a1cc81418182ec123bc864af46K.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S2dc11c3968274659ba1ae2d93c79af62C.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sfc80088bcaf1462a884687d5caeb6d1eU.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sc81df9804eaa443abca550d321497778p.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S35056990582e4d3fa7278d1fbea6b6c4K.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S1d08b2911a6d45ac8638b9d560f5c807Z.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf254ffa0b12b46c78b6af2f683ade4bad.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7c9ccf6ae00a41a49cea3138d08096ccL.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S6833d09c40b7461ab355b054590be739j.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S4fbf283605714da18adbb19058503f0b8.jpg\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S55e9281b0d3b427687f57f702e6b737cb.jpg\"\u003e\u003c\/p\u003e","brand":"Fiio","offers":[{"title":"Green","offer_id":49984649363695,"sku":"1005012583052461-Green","price":54.54,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":49984649396463,"sku":"1005012583052461-Silver","price":54.54,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":49984649429231,"sku":"1005012583052461-Black","price":54.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/2004\/1455\/files\/S390b9bb0d957437e936b2aef9aa18ff89.webp?v=1782456756","url":"https:\/\/thehificat.com\/products\/fiio-gigas1-class-ab","provider":"The HiFi Cat","version":"1.0","type":"link"}