{"product_id":"stk4843-sanyo-stereo-amplifier-hybrid-ic-25w-30w","title":"STK4843 Sanyo AF Power Amplifier","description":"\u003ch3\u003eHigh-Fidelity 30W+30W Dual-Channel Stereo Power Amplifier Module\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSTK4843\u003c\/strong\u003e is a sophisticated thick-film hybrid integrated circuit from Sanyo's high-performance audio lineup. Delivering a continuous \u003cstrong\u003e30 Watts per channel\u003c\/strong\u003e, this 16-pin module is a staple in premium Hi-Fi mini-components, bookshelf stereos, and multi-channel home theater receivers. It is engineered for audiophiles who demand a layered, rich soundstage with minimal background noise.\u003c\/p\u003e\n\n\u003cp\u003eUtilizing a dual-supply (split rail) architecture, the STK4843 allows for a direct-coupled output, eliminating large DC-blocking capacitors for improved low-frequency response and tighter bass. With a remarkably low Total Harmonic Distortion (THD) and a high signal-to-noise ratio of 105dB, it is the perfect replacement part for high-precision audio restorations.\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 30W + 30W (at 8Ω, THD = 0.08% typical).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 2-Channel Stereo in a standard 16-Pin SIP (Single In-line Package).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Supply Architecture:\u003c\/strong\u003e Operates on split rails (e.g., ±24V to ±35V) for superior audio clarity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Fidelity:\u003c\/strong\u003e 105dB Signal-to-Noise ratio for crystal-clear output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e Wide bandwidth from 20Hz to 50kHz (+0, -3dB).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Reliability:\u003c\/strong\u003e Built on Sanyo's proprietary IMST substrate for high-efficiency heat transfer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Safety Guide:\u003c\/h4\u003e\n\u003cp\u003eAs a high-fidelity power module, the STK4843 generates significant thermal energy. It \u003cstrong\u003emust\u003c\/strong\u003e be securely bolted to a clean, flat heatsink using a fresh layer of high-quality thermal silicone grease. Operating this module without a proper heatsink—even for a brief functional test—will cause immediate and permanent internal substrate failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eTechnician's Note: Before installing, ensure that your VCC+ and VCC- rails are symmetrical and discharge all filter capacitors. We highly recommend checking the output Zobel network (resistor\/capacitor) and emitter resistors, as these components often fail when the original module shorts, which can damage your new replacement.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sanyo","offers":[{"title":"New","offer_id":48013257539738,"sku":"SC0008","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9477\/8778\/files\/28-STK4843_20Sanyo_20AF_20Power_20Amplifier.jpg?v=1778557092","url":"https:\/\/prellelectronics.com\/products\/stk4843-sanyo-stereo-amplifier-hybrid-ic-25w-30w","provider":"Prell Electronics","version":"1.0","type":"link"}