This is a basic audio amplifier that is using the LM386 IC. It has 1w of output (It may not sound much but trust me, 1w is not a little power for an audio amp) and you can adjust the gain of the IC with a trimpot from 20 to 200. If you don't want to adjust the gain and 20 gain is enough then you don't need c5, c2 and the trimpod. This is a really basic audio amplifier and will hopefully help you learn. You can power it with 5-16V and can use 4-8-32 ohms of speakers. It may not be the most quality sounding one but it should be enough.

You can cut an earphone cable, connect the ground to ground, and use one of the wires of the earphone cable (left or right speaker) and connect it to audio signal(you can merge the right and left speaker with two 1k resistors-one for each and then merge- if you want to do stereo to mono). Then connect your power supplies gnd and vcc and you should be good to go :D. Have fun!

Use this PCB at your own risk !

If you ask me politely, ı can give you the gerber file and a fabricated (panelized) gerber file. If you want to support me you can directly order from pcbway.