This is usually used for DIY audio amplifiers and speakers. Just simply connect it with a power supply and a pair of speakers. This board could be powered by USB Power supply. Operating voltage: 2.5V-5.5V Maximum output power: 3W*2(5V 4Ω) PCB size is about: length 30mm width 22mm overall height after installed is about 16mm. Flexible assembly usage.
Ozamiz City, Philippines