{"product_id":"dc-3-7v-5v-3w-digital-audio-amplifier-board-diy-bluetooth-speaker-module","title":"3W DC 3.7V–5V Digital Audio Amplifier Board | DIY Bluetooth Speaker","description":"\u003ch2\u003eDC 3.7V–5V 3W Dual-Channel Digital Audio Amplifier Board\u003c\/h2\u003e\n\u003cp\u003eUpgrade your DIY audio projects with this compact \u003cstrong\u003e3W digital audio amplifier board\u003c\/strong\u003e. Designed for makers, hobbyists, and electronics enthusiasts, this dual-plate module delivers clear, punchy sound from a tiny footprint. Whether you're building a custom Bluetooth speaker, modifying an existing sound system, or prototyping a new audio device, this board offers reliable amplification at low operating voltages — perfect for battery-powered builds.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide input voltage:\u003c\/strong\u003e Operates on DC 3.7V to 5V — compatible with single-cell LiPo batteries and USB power sources\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3W output power:\u003c\/strong\u003e Delivers clear, full audio output suitable for small to medium enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-plate (double) design:\u003c\/strong\u003e Stereo-capable layout for richer, more immersive sound reproduction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth speaker modification ready:\u003c\/strong\u003e Ideal for upgrading or building DIY Bluetooth speaker projects from scratch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD package:\u003c\/strong\u003e Surface-mount construction ensures a compact, lightweight board for space-constrained builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide operating temperature:\u003c\/strong\u003e Rated from -40°C to +85°C for reliable performance across environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo high-concern chemicals:\u003c\/strong\u003e Safe materials for home workshop use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 3.7V – 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDissipation Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5W\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 (Surface Mount)\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 +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 piece\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\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis amplifier board is a go-to choice for electronics hobbyists, DIY audio enthusiasts, students working on audio engineering projects, and anyone looking to breathe new life into a speaker build. Its low-voltage operation and compact SMD form factor make it equally at home in a portable Bluetooth speaker or a desktop audio mod.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/cordless-rechargeable-milk-frother-coffee-foam-egg-whisk\"\u003eCordless Rechargeable Milk Frother – Coffee Foam \u0026amp; Egg Whisk\u003c\/a\u003e\u003c\/li\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.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What voltage should I use to power this digital audio amplifier board?\u003c\/h4\u003e\n\u003cp\u003eA: This amplifier board supports a supply voltage range of DC 3.7V to 5V. A single-cell LiPo battery (3.7V) or a standard USB 5V power source both work perfectly, making it highly versatile for portable and desktop DIY audio builds.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this board for a DIY Bluetooth speaker project?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. This 3W digital audio amplifier board is specifically designed for Bluetooth speaker modification and DIY speaker builds. Simply pair it with a Bluetooth receiver module and a compatible speaker driver to create a fully custom wireless audio device.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this amplifier board suitable for stereo output?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The dual-plate (double channel) design supports stereo audio output, allowing you to drive two speaker channels simultaneously for a fuller, more immersive listening experience in your DIY audio projects.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What voltage should I use to power this digital audio amplifier board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This amplifier board supports a supply voltage range of DC 3.7V to 5V. A single-cell LiPo battery (3.7V) or a standard USB 5V power source both work perfectly, making it highly versatile for portable and desktop DIY audio builds.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this board for a DIY Bluetooth speaker project?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. 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