PAM8403 mini 3w 5v amplifier - Solar powered test
PAM8403
Mini amplifier test. About the size of a nickel.
Being powered by a 12v solar panel rigged to a 2.1amp 12v-5v USB power supply and connected to a bluetooth receiver.
The audio output is very surprisingly rich with full range audio that is room-filling amplitude you have to raise your voice over to attempt conversation.