{"product_id":"pam8403-mini-digital-amplifier-board-2x3w-class-d-usb-powered","title":"PAM8403 Mini Class D Amplifier Board 2×3W USB Powered 5V","description":"\n\u003ch2\u003ePAM8403 Ultra-Mini Class D Digital Amplifier Board – 2×3W, USB Powered\u003c\/h2\u003e\n\u003cp\u003eUpgrade your DIY audio projects with the \u003cstrong\u003ePAM8403 Ultra-Mini Digital Amplifier Board\u003c\/strong\u003e. Powered by the highly efficient PAM8403 Class D chipset, this compact stereo amplifier board delivers \u003cstrong\u003e2×3W of clean, clear audio output\u003c\/strong\u003e with up to \u003cstrong\u003e90% power efficiency\u003c\/strong\u003e — meaning less heat, longer runtime, and better sound from a tiny footprint. Whether you're building a custom speaker, repurposing old drivers, or prototyping an audio circuit, this board is an excellent choice.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass D Efficiency:\u003c\/strong\u003e Up to 90% power efficiency for minimal heat generation and maximum audio output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Channel Stereo:\u003c\/strong\u003e 2×3W output for true left and right channel audio\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Supply Voltage:\u003c\/strong\u003e Operates from 2.5V to 5.5V — compatible with standard USB (5V) power sources\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact SMD Design:\u003c\/strong\u003e Tiny form factor makes it ideal for space-constrained builds and embedded projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Functions reliably from -40°C to +85°C for demanding environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Clean and safe for hobbyist and professional use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Simplicity:\u003c\/strong\u003e Easily powered via USB — no complex power supply needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChipset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePAM8403\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 × 3W\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 D\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\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 90%\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\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\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Board\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDIY Bluetooth speakers and audio systems\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi and Arduino audio output circuits\u003c\/li\u003e\n  \u003cli\u003eComputer speaker modifications\u003c\/li\u003e\n  \u003cli\u003ePortable battery-powered speaker builds\u003c\/li\u003e\n  \u003cli\u003eElectronics hobbyists and makers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\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.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 does the PAM8403 amplifier board require to operate?\u003c\/h4\u003e\n\u003cp\u003eA: The PAM8403 mini digital amplifier board operates on a supply voltage of \u003cstrong\u003e2.5V to 5.5V\u003c\/strong\u003e, making it perfectly compatible with a standard 5V USB power source. This makes it extremely convenient for desktop, portable, and microcontroller-based projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the audio output power of this amplifier board?\u003c\/h4\u003e\n\u003cp\u003eA: This board delivers \u003cstrong\u003e2×3W of stereo output power\u003c\/strong\u003e — one 3W channel for the left speaker and one 3W channel for the right speaker. The Class D design ensures this power is delivered with up to 90% efficiency, so heat is minimal even during sustained use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this amplifier board suitable for Arduino or Raspberry Pi projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The PAM8403 board is a popular choice for Arduino, Raspberry Pi, and other microcontroller-based audio projects. Its low operating voltage (as low as 2.5V) and compact SMD form factor make it easy to integrate into custom enclosures and breadboard prototypes.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What types of speakers can I connect to this board?\u003c\/h4\u003e\n\u003cp\u003eA: The PAM8403 amplifier board is compatible with standard 4Ω or 8Ω passive speakers. It is commonly used to drive small bookshelf-style speaker drivers, DIY speaker cones, and salvaged computer speakers in hobbyist builds.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What voltage does the PAM8403 amplifier board require to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The PAM8403 mini digital amplifier board operates on a supply voltage of 2.5V to 5.5V, making it perfectly compatible with a standard 5V USB power source. 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