10pcs PAM8403 Mini 5V Digital Amplifier Board USB Power Supply Good Sound Effect

1. Power supply range: 5V DC
2. Operating voltage: 2.5V-5.5V
3. Output Power: 3W x 2 (5V 4Ω)
4. PAM8403 is a small digital amplifier chip, high-definition sound quality highlights the advantages of digital chips
5. Circuit using a reasonable peripheral configuration, power supply filter upgrade to 470uf, 1.6mm fiberglass plate, the amplifier board to do the meticulous
6. Output 3W + 3W high-fidelity sound quality, potentiometer using the original anti-surface body, life expectancy of up to 15 years, potentiometer with a switch can be counterclockwise directly cut off the power supply.
7. Please ensure that the power supply voltage does not exceed 5.5V, and please do not reverse the positive (+) negative (-) polarity, otherwise it will burn the circuit board!
8. Size: with potentiometer about 29.5 x 20.2 x 15 mm, module about 21 x 18 mm