The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area.

Features

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 O/8 O 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 products