{"product_id":"stk4038ii-sanyo-mono-amplifier-hybrid-ic-60w","title":"STK4038II Sanyo AF Power Amplifier","description":"\u003ch3\u003eHigh-Output 60W Mono Audio Power Amplifier Module\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSTK4038II\u003c\/strong\u003e is a robust thick-film hybrid integrated circuit from Sanyo's trusted \"Series II\" line. Capable of delivering a continuous \u003cstrong\u003e60 Watts\u003c\/strong\u003e of power, this module is an essential replacement part for high-performance vintage receivers, dedicated subwoofers, and active monitor systems from the mid-80s and 90s.\u003c\/p\u003e\n\n\u003cp\u003eKnown for its thermal durability and reliable power delivery, the STK4038II features a built-in constant current circuit to minimize power-on and power-off shock noise (\"thump\"), ensuring your speakers remain protected during operation.\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 60W Minimum (at 8Ω, 20Hz to 20kHz, THD = 0.4%).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Mono (Single Channel) in a 15-pin hybrid package.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliability:\u003c\/strong\u003e Series II architecture optimized for low thermal resistance (1.4°C\/W).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e Full-range audio capability from 20Hz to 50kHz.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e Recommended ±38V (Absolute Maximum ±57V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Compatibility:\u003c\/strong\u003e Member of the 30W to 100W pin-compatible series for flexible repair options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Safety Notes:\u003c\/h4\u003e\n\u003cp\u003eThe STK4038II generates significant heat during high-output sessions and \u003cstrong\u003emust\u003c\/strong\u003e be mounted to a substantial heatsink with high-quality thermal silicone grease. Operating this module without a 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 Tip: Before installing your new STK4038II, please verify that your power supply filter capacitors are fully discharged and that the output emitter resistors are intact. Many original failures are caused by external speaker shorts that must be corrected to protect the new module.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sanyo","offers":[{"title":"New","offer_id":48006075351194,"sku":"SC0007","price":25.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9477\/8778\/files\/36-STK4038II_20Sanyo_20AF_20Power_20Amplifier.jpg?v=1778389475","url":"https:\/\/prellelectronics.com\/products\/stk4038ii-sanyo-mono-amplifier-hybrid-ic-60w","provider":"Prell Electronics","version":"1.0","type":"link"}