{"product_id":"audio-system-as-300-4-power-amplifier","title":"AUDIO SYSTEM AS-300.4 POWER AMPLIFIER","description":"\u003ch2 data-start=\"192\" data-end=\"214\"\u003e🎵 Product Overview\u003c\/h2\u003e\n\u003cp data-start=\"216\" data-end=\"946\"\u003eThe \u003cstrong data-start=\"220\" data-end=\"261\"\u003eAudio System AS-300.4 Power Amplifier\u003c\/strong\u003e is a \u003cstrong data-start=\"267\" data-end=\"300\"\u003e4-channel car audio amplifier\u003c\/strong\u003e engineered to deliver clean, reliable power to your vehicle’s speakers. Built with a robust \u003cstrong data-start=\"393\" data-end=\"428\"\u003eClass-AB amplification topology\u003c\/strong\u003e, this unit is ideal for drivers who want improved audio clarity, stronger dynamics, and better overall system performance compared to factory head units. It balances punchy output with musical fidelity, making it well-suited for powering component speakers, midranges, and even bridged subwoofer setups. \u003cstrong data-start=\"733\" data-end=\"753\"\u003eClass-AB designs\u003c\/strong\u003e like this are known for warm tonal response and solid control across a wide range of loads — great for both daily listening and high-quality audio builds.\u003c\/p\u003e\n\u003cdiv class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) [--composer-overlap-px:55px] grow flex\"\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:46c49af9-d127-4e85-9667-53a2c8643cdb-6\" data-testid=\"conversation-turn-14\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a9a52fe9-5472-4a86-9861-9a4c50ba7cb9\" dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-2\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003ch2 data-start=\"953\" data-end=\"977\"\u003e🔊 Key Specifications\u003c\/h2\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"979\" data-end=\"2810\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"979\" data-end=\"1014\"\u003e\n\u003ctr data-start=\"979\" data-end=\"1014\"\u003e\n\u003cth data-start=\"979\" data-end=\"999\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"981\" data-end=\"998\"\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth data-start=\"999\" data-end=\"1014\" data-col-size=\"xl\"\u003e\u003cstrong data-start=\"1001\" data-end=\"1012\"\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1050\" data-end=\"2810\"\u003e\n\u003ctr data-start=\"1050\" data-end=\"1103\"\u003e\n\u003ctd data-start=\"1050\" data-end=\"1062\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1052\" data-end=\"1061\"\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1062\" data-end=\"1103\" data-col-size=\"xl\"\u003eAudio System AS-300.4 Power Amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1104\" data-end=\"1136\"\u003e\n\u003ctd data-start=\"1104\" data-end=\"1119\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1106\" data-end=\"1118\"\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1119\" data-end=\"1136\" data-col-size=\"xl\"\u003e4 (4-channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1137\" data-end=\"1234\"\u003e\n\u003ctd data-start=\"1137\" data-end=\"1158\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1139\" data-end=\"1157\"\u003eAmplifier Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1158\" data-end=\"1234\" data-col-size=\"xl\"\u003eClass-AB high-efficiency power amp \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1235\" data-end=\"1493\"\u003e\n\u003ctd data-start=\"1235\" data-end=\"1265\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1237\" data-end=\"1264\"\u003eRMS Power (per channel)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1265\" data-end=\"1493\" data-col-size=\"xl\"\u003eApprox. \u003cem data-start=\"1275\" data-end=\"1318\"\u003evaries by impedance and system conditions\u003c\/em\u003e — typical Class-AB 4-channel amps in this class deliver solid mid-range power suitable for full-range speaker sets and bridged sub use \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1494\" data-end=\"1634\"\u003e\n\u003ctd data-start=\"1494\" data-end=\"1520\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1496\" data-end=\"1519\"\u003eBridgeable Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1520\" data-end=\"1634\" data-col-size=\"xl\"\u003eYes — rear channels may be bridged for subwoofer power (model dependent) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1635\" data-end=\"1769\"\u003e\n\u003ctd data-start=\"1635\" data-end=\"1660\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1637\" data-end=\"1659\"\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-col-size=\"xl\" data-start=\"1660\" data-end=\"1769\"\u003eBroad audio range suitable for both speakers and bridged sub output \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1770\" data-end=\"1906\"\u003e\n\u003ctd data-start=\"1770\" data-end=\"1804\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1772\" data-end=\"1803\"\u003eSignal-to-Noise Ratio (S\/N)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1804\" data-end=\"1906\" data-col-size=\"xl\"\u003eHigh S\/N for clean audio (typical \u0026gt;90 dB for this amp class) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1907\" data-end=\"2033\"\u003e\n\u003ctd data-start=\"1907\" data-end=\"1924\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"1909\" data-end=\"1923\"\u003eInput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"1924\" data-end=\"2033\" data-col-size=\"xl\"\u003eLine-level RCA inputs (factory or aftermarket head unit compatible) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2034\" data-end=\"2186\"\u003e\n\u003ctd data-start=\"2034\" data-end=\"2051\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2036\" data-end=\"2050\"\u003eCrossovers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2051\" data-end=\"2186\" data-col-size=\"xl\"\u003eTypically adjustable high pass\/low pass filters for flexible tuning (varies by exact version) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2187\" data-end=\"2338\"\u003e\n\u003ctd data-start=\"2187\" data-end=\"2213\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2189\" data-end=\"2212\"\u003eProtection Features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2213\" data-end=\"2338\" data-col-size=\"xl\"\u003eThermal, overload, short-circuit and DC protection circuits (common for this class) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2339\" data-end=\"2454\"\u003e\n\u003ctd data-start=\"2339\" data-end=\"2353\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2341\" data-end=\"2352\"\u003eCooling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2353\" data-end=\"2454\" data-col-size=\"xl\"\u003eHeatsink and ventilation design for sustained performance \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2455\" data-end=\"2565\"\u003e\n\u003ctd data-start=\"2455\" data-end=\"2470\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2457\" data-end=\"2469\"\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2470\" data-end=\"2565\" data-col-size=\"xl\"\u003eCompact chassis for secure installation in vehicles \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2566\" data-end=\"2721\"\u003e\n\u003ctd data-start=\"2566\" data-end=\"2583\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2568\" data-end=\"2582\"\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2583\" data-end=\"2721\" data-col-size=\"xl\"\u003eVaries by housing design (car audio amp class often ~250-350 mm L × 180-240 mm W × 45-65 mm H) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"2722\" data-end=\"2810\"\u003e\n\u003ctd data-start=\"2722\" data-end=\"2735\" data-col-size=\"sm\"\u003e\u003cstrong data-start=\"2724\" data-end=\"2734\"\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-start=\"2735\" data-end=\"2810\" data-col-size=\"xl\"\u003eSolid build (typically ~2–4 kg) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"2812\" data-end=\"2815\"\u003e\n\u003ch2 data-start=\"2817\" data-end=\"2844\"\u003e📌 Features \u0026amp; Highlights\u003c\/h2\u003e\n\u003ch3 data-start=\"2846\" data-end=\"2883\"\u003e🔧 \u003cstrong data-start=\"2853\" data-end=\"2883\"\u003eVersatile 4-Channel Design\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"2884\" data-end=\"3058\"\u003eProvides independent amplification for four speakers, enabling full-range stereo setups or bridged configurations for subwoofer power. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"3060\" data-end=\"3093\"\u003e🎶 \u003cstrong data-start=\"3067\" data-end=\"3093\"\u003eClass-AB Amplification\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"3094\" data-end=\"3249\"\u003eOffers a good balance of efficiency and audio fidelity, with smooth performance across both music and movie audio.” \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"3251\" data-end=\"3285\"\u003e⚙️ \u003cstrong data-start=\"3258\" data-end=\"3285\"\u003eFlexible Tuning Options\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"3286\" data-end=\"3438\"\u003eAdjustable crossovers and input sensitivity let you tailor the output to match your head unit and speaker setup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"3440\" data-end=\"3470\"\u003e🔐 \u003cstrong data-start=\"3447\" data-end=\"3470\"\u003eBuilt-In Protection\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"3471\" data-end=\"3645\"\u003eIncludes protections against overheating and electrical fault conditions to keep your amplifier and speakers safe during extended use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"3647\" data-end=\"3678\"\u003e🛠️ \u003cstrong data-start=\"3655\" data-end=\"3678\"\u003eSolid Build Quality\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"3679\" data-end=\"3832\"\u003eDurable chassis and quality internal components deliver reliable performance in everyday automotive environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"3834\" data-end=\"3837\"\u003e\n\u003ch2 data-start=\"3839\" data-end=\"3852\"\u003e🧠 Summary\u003c\/h2\u003e\n\u003cp data-start=\"3854\" data-end=\"4236\"\u003eThe \u003cstrong data-start=\"3858\" data-end=\"3883\"\u003eAudio System AS-300.4\u003c\/strong\u003e is a capable and flexible \u003cstrong data-start=\"3910\" data-end=\"3939\"\u003e4-channel power amplifier\u003c\/strong\u003e that can upgrade your car’s audio performance with cleaner, higher-power output than a standard head unit. Its \u003cstrong data-start=\"4051\" data-end=\"4070\"\u003eClass-AB design\u003c\/strong\u003e delivers richer sound quality and strong control across speakers or bridged sub channels, making it a versatile choice for enthusiasts building aftermarket systems.\u003c\/p\u003e\n\u003chr data-start=\"4238\" data-end=\"4241\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"STEG AUSTRALIA","offers":[{"title":"Default Title","offer_id":47406225916091,"sku":null,"price":299.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/4433\/8875\/files\/IMG_6945_1.jpg?v=1769582912","url":"https:\/\/stegaustralia.com.au\/products\/audio-system-as-300-4-power-amplifier","provider":"STEG Australia","version":"1.0","type":"link"}