PAM8403 audio amplifier module

Dual channel stereo output 3 w + 3 w power Class D Works with 2.5V-5v power supply High amplification efficiency 85% can directly drive 4 Ω/8 Ω small speakers Good sound quality  & noise suppression Unique without LC filter class D digital power board Can use computer USB power supply directly Small Size, 1.85 x 2.11 cm   can easily fit in a variety of productsNote when using Input audio should be via sheilded wire for best performance. Use proper filtered power supply with good filter capacitors. Take care not to short speaker wires else IC will get damaged. Make sure power supply never execeds 5.5V else IC will get damaged. Use regulated power supply.Board Schematic