{"product_id":"stk4893-sanyo-audiophile-stereo-amplifier-40w-40w","title":"STK4893 Sanyo AF Power Amplifier","description":"\u003ch3\u003ePremium 40W+40W High-Fidelity Stereo Power Amplifier Module\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSTK4893\u003c\/strong\u003e is an advanced thick-film hybrid integrated circuit from Sanyo's high-fidelity audio series. Delivering a robust \u003cstrong\u003e40 Watts per channel\u003c\/strong\u003e, this 16-pin module is designed for audiophile-grade performance in home stereo receivers, high-output bookshelf systems, and professional mixing consoles. It is prized for its clinical signal purity and exceptional dynamic range.\u003c\/p\u003e\n\n\u003cp\u003eOperating in Class AB, the STK4893 achieves a remarkably low Total Harmonic Distortion (THD) of just \u003cstrong\u003e0.05%\u003c\/strong\u003e (typical), providing a transparent soundstage that is a significant step up from standard Series II modules. Its dual-supply architecture ensures tight, responsive bass and a crystal-clear high-frequency response up to 100kHz.\u003c\/p\u003e\n\n\u003ch4\u003eKey Technical Features:\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous Power Output:\u003c\/strong\u003e 40W + 40W (at 8Ω, 20Hz to 20kHz).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Distortion:\u003c\/strong\u003e 0.05% THD typical at rated power for audiophile clarity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Supply Operation:\u003c\/strong\u003e Recommended ±32V DC (Absolute Maximum ±46V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e Wide bandwidth from 20Hz to 100kHz (+0, -3dB).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e 100dB for a virtually silent noise floor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Advantage:\u003c\/strong\u003e Built on Sanyo's proprietary IMST substrate for high-efficiency heat dissipation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Safety Guide:\u003c\/h4\u003e\n\u003cp\u003eAs a high-output 80W total module, the STK4893 generates significant thermal energy. It \u003cstrong\u003emust\u003c\/strong\u003e be securely mounted to a clean, flat heatsink using high-quality thermal silicone grease. Operating this module without a proper heatsink—even for a five-second diagnostic check—will cause immediate and permanent internal failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eTechnician's Note: Before installing, verify that your split-rail power supply is symmetrical (e.g., ±32V) and discharge all filter capacitors. We highly recommend checking the output Zobel network and the 0.22Ω emitter resistors, as a short in the previous module often damages these components, which can instantly ruin a new replacement.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sanyo","offers":[{"title":"New","offer_id":48013257834650,"sku":"SC0008","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9477\/8778\/files\/29-STK4893_20Sanyo_20AF_20Power_20Amplifier.jpg?v=1778557095","url":"https:\/\/prellelectronics.com\/products\/stk4893-sanyo-audiophile-stereo-amplifier-40w-40w","provider":"Prell Electronics","version":"1.0","type":"link"}