{"product_id":"mini-class-ab-5w-mono-audio-amplifier-board-5v-vs8871","title":"Mini Class AB 5W Mono Audio Amplifier Board – 5V VS8871","description":"\n\u003ch2\u003eMini Class AB 5W Mono Audio Power Amplifier Board (5V)\u003c\/h2\u003e\n\u003cp\u003eUpgrade your DIY audio projects with this compact \u003cstrong\u003eClass AB Digital Amplifier Board\u003c\/strong\u003e. Powered by the VS8871 chip, this SMD-packaged mono amplifier delivers up to \u003cstrong\u003e5W of clean audio output\u003c\/strong\u003e from a 5V supply — making it perfect for desktop speakers, computer audio systems, small radios, and custom electronics builds.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're a hobbyist, engineer, or electronics enthusiast, this tiny but powerful board is an excellent foundation for high-quality sound amplification in space-constrained applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass AB Amplification:\u003c\/strong\u003e Balanced efficiency and audio fidelity for clear, low-distortion mono sound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5W Output Power:\u003c\/strong\u003e Suitable for small to medium speakers (3–5W dissipation range)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Supply Voltage:\u003c\/strong\u003e Operates on 2.5V–5.5V DC — USB-powered friendly at 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Rated from -40°C to 80°C for versatile deployment environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Package:\u003c\/strong\u003e Ultra-compact surface-mount design for space-saving integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Safe construction materials with no restricted substances\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Condition:\u003c\/strong\u003e Shipped brand new, ready for immediate use or integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5128 \/ VS8871 SFT-MY28\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplifier Class\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClass AB (Mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–5W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5V – 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSMD\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eComputer audio, DIY speakers, embedded audio systems\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 board per order\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Mini Class AB 5W Mono Audio Amplifier Board (VS8871)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGreat Pairings for Your DIY Project\u003c\/h3\u003e\n\u003cp\u003eComplete your electronics toolkit with these related products:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What chip does this Class AB audio amplifier board use?\u003c\/h4\u003e\n\u003cp\u003eA: This mini amplifier board is built around the \u003cstrong\u003eVS8871\u003c\/strong\u003e audio amplifier IC, a reliable SMD-package chip that delivers up to 5W mono output with Class AB efficiency. The model reference is SFT-MY28.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I power this amplifier board directly from a USB port?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The board operates across a wide supply voltage range of \u003cstrong\u003e2.5V to 5.5V DC\u003c\/strong\u003e, which makes it fully compatible with standard 5V USB power sources. This makes it ideal for computer audio builds and portable DIY speaker projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What kind of speaker can I connect to this 5W amplifier board?\u003c\/h4\u003e\n\u003cp\u003eA: This board is designed for \u003cstrong\u003emono speaker setups\u003c\/strong\u003e with an output power of 3–5W. It pairs well with small to medium full-range drivers commonly used in desktop speakers, computer audio systems, and custom enclosures. Always match the speaker's impedance and power rating to the board's output specifications for best results.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this amplifier board suitable for beginners in electronics?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the compact SMD design makes it straightforward to integrate into DIY builds. Basic soldering skills and knowledge of audio signal routing are recommended. The board arrives ready to use — simply connect your power supply, audio input, and speaker output.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What chip does this Class AB audio amplifier board use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This mini amplifier board is built around the VS8871 audio amplifier IC, a reliable SMD-package chip that delivers up to 5W mono output with Class AB efficiency. 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