{"product_id":"stk4040xi-sanyo-audiophile-mono-amplifier-ic-70w","title":"STK4040XI Sanyo AF Power Amplifier","description":"\u003ch3\u003eUltimate-Grade 70W Audiophile Mono Power Amplifier Module\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eSTK4040XI\u003c\/strong\u003e represents the pinnacle of Sanyo’s thick-film hybrid technology. As part of the prestigious \"Series XI,\" this module is engineered for clinical accuracy and absolute signal purity. It delivers a continuous 70 Watts of power with a staggering Total Harmonic Distortion (THD) of just \u003cstrong\u003e0.008%\u003c\/strong\u003e, effectively reaching the limits of analog transparency.\u003c\/p\u003e\n\n\u003cp\u003eThis mono module is the definitive choice for audiophile mono-block builds, high-end center channel restorations, and premium active monitors where zero signal coloration is required. Its advanced internal cascode and current mirror circuitry provide a noise floor that is virtually silent, ensuring every nuance of the original recording is preserved.\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 = 0.008%).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaster-Grade Distortion:\u003c\/strong\u003e 0.008% THD for unmatched sonic transparency.\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\u003eFrequency Response:\u003c\/strong\u003e Optimized for high-bandwidth audio from 20Hz to 50kHz (+0, -3dB).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e Recommended supply of ±43.5V (Absolute Maximum ±63V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Compatibility:\u003c\/strong\u003e Member of the 50W to 150W \"XI\" series for flexible power scaling and upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Thermal Management:\u003c\/h4\u003e\n\u003cp\u003eDue to its high-precision architecture, the STK4040XI \u003cstrong\u003emust\u003c\/strong\u003e be securely mounted to a substantial, high-mass heatsink using premium thermal grease. Operating the module without a heatsink—even for a brief functional test—will result in immediate and permanent internal substrate failure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eTechnician's Note: Verify that your power supply rails are healthy and balanced at ±43.5V. For the best performance from this \"XI\" series chip, we recommend using high-quality low-ESR filtering capacitors in the power stage to maintain the ultra-low 0.008% THD specification.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sanyo","offers":[{"title":"New","offer_id":48006075515034,"sku":"SC0007","price":32.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/9477\/8778\/files\/39-STK4040XI_20Sanyo_20AF_20Power_20Amplifier.jpg?v=1778389485","url":"https:\/\/prellelectronics.com\/products\/stk4040xi-sanyo-audiophile-mono-amplifier-ic-70w","provider":"Prell Electronics","version":"1.0","type":"link"}