Placa amplificadora digital mini 5V PAM8403 com potenciômetro de comutação pode ser alimentada por USB

Circuit adopts the reasonable configuration, power filtering is upgraded to 470 uf, 1.6 mm glass fiber sheet, great performance. Output of 3 w + 3 w high-fidelity sound quality. The potentiometer adopts the original anti-watch body, and the potentiometer with the switch counterclockwise can cut off the power directly. 100% Brand new and high quality. PAM8403 is a small digital amplifier chip, which highlights the advantages of digital chip. Specifications: Power supply range: 5V DC Lowest output: 3W*2 Size: 3.5 x 3cm / 1.38 x 1.18inch Weight: 9g Package included: 1 x Mini Amplifier Board