{"title":"3W mini audio stereo amplifier","handle":"3w-mini-audio-stereo-amplifier","url":"/products/3w-mini-audio-stereo-amplifier","description":"This compact stereo amplifier module from DFRobot is based on the PAM8403 chip, delivering 3W per channel into 4Ω speakers with over 90% efficiency. It's a fully functional two-channel audio amplifier with an integrated sleep mode that can be controlled via a microcontroller.\n\nOperating from 3.6–5.5V DC, the module is well-suited for battery-powered audio projects, portable speakers, and embedded sound systems where space and power efficiency are critical.\n\nKey Features\n\n\nStereo Output – Two independent 3W audio channels\n\nHigh Efficiency – Greater than 90% efficiency (Class D)\n\nSleep Mode – Integrated low-power sleep function, controllable via pin\n\nCompact Size – Just 15.5 × 24mm\n\nPAM8403 Chip – Proven filterless Class D amplifier IC\n\n\nSpecifications\n\n\nPower Supply – 3.6–5.5V DC\n\nOutput Power – 3W + 3W (4Ω load)\n\nEfficiency – >90%\n\nBoard Size – 15.5 × 24mm\n\nAmplifier IC – PAM8403\n\n\nIdeal For\n\nDIY portable speakers\nEmbedded audio projects\nArduino and microcontroller sound output\nBattery-powered audio applications\n\n\nPackage Contents\n\n1× 3W mini audio stereo amplifier module\n\n\n\nWarning: Do not exceed 5.5V input — overvoltage will permanently damage the PAM8403 chip.\n\n\nResources\n\nDFRobot Wiki\nPAM8403 Datasheet (PDF)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9442,"title":"Default Title","sku":"DF-DFR0119","price":8.54,"on_sale":false,"in_stock":true,"available_quantity":75,"option1":"Default Title"}]}