20pcs PAM8403 2 Channel USB Power Audio Amplifier Module Board 3Wx2 Volume Control

Specifications:

Operating voltage: 2.5V-5.5V
Maximum output power: 3W*2(5V 4Ω)
Length: 29mm
Width: 20mm
Overall height after installed is about 16mm.

Note:

Please make sure the power supply is not more than 5.5V and please don't do reverse polarity for "+" and "-", or else, it will burn the board.

Package included:

20 x PAM8403 Audio Amplifier Module