{"product_id":"stk4044v-sanyo-high-fidelity-mono-amplifier-ic-70w","title":"STK4040V Sanyo AF Power Amplifier","description":"\u003ch3\u003eHigh-Fidelity 70W Mono Power Amplifier Module\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSTK4040V\u003c\/strong\u003e is a high-performance thick-film hybrid integrated circuit from Sanyo's prestigious \"V\" series. Delivering a continuous 70 Watts of output, this module is specifically engineered for high-fidelity audio applications where clean, uncolored power is a necessity. The \"V\" series revision features an internal current mirror circuit that reduces Total Harmonic Distortion (THD) to a mere 0.08%.\u003c\/p\u003e\n\n\u003cp\u003eThis mono module is a staple in the restoration of high-end vintage stereo receivers (typically used in pairs), powered studio monitors, and professional-grade guitar or keyboard amplifiers requiring significant headroom.\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 70W min (at 8Ω, 20Hz to 20kHz, THD = 0.08%).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDistortion Performance:\u003c\/strong\u003e Low 0.08% THD for professional-level sonic clarity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e Full-range reproduction from 20Hz to 50kHz.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e Recommended supply of ±42V to ±43.5V (Absolute Maximum ±62V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Compatibility:\u003c\/strong\u003e Member of the STK4024V series (20W to 100W), allowing for easy power scaling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Ready:\u003c\/strong\u003e Designed to support external circuits for pop-noise muting, thermal shutdown, and load-short protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Thermal Management:\u003c\/h4\u003e\n\u003cp\u003eDue to its 70W output, the STK4040V generates substantial heat. It \u003cstrong\u003emust\u003c\/strong\u003e be securely mounted to a flat, clean heatsink using high-quality thermal silicone grease. Operating the module without a heatsink—even for a brief test—will result in immediate and permanent internal substrate failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eTechnician's Note: Before installation, check your power supply rails for symmetry. For optimal \"V-series\" performance, ensure your supply remains near the recommended ±42V range. We strongly advise checking for shorted output transistors in the existing circuit before powering up the new module.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sanyo","offers":[{"title":"New","offer_id":48006075416730,"sku":"SC0007","price":29.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9477\/8778\/files\/37-STK4040V_20Sanyo_20AF_20Power_20Amplifier.jpg?v=1778389478","url":"https:\/\/prellelectronics.com\/products\/stk4044v-sanyo-high-fidelity-mono-amplifier-ic-70w","provider":"Prell Electronics","version":"1.0","type":"link"}