“In this project I will be showing you how to create a class A audio amp. The great thing about such amps is that they only require a few components and sound awesome. On the other hand though, their efficiency is not that great. But since I will be creating this amp for a smartphone with a USB Type-C port for powering the amp, it should be just fine. So let me show you how to calculate a design for such an amp and how to build it! Let’s get started!
Here you can find a parts list with example seller (affiliate links):
2x BC337 NPN BJT
2x 100Ω, 2x 22Ω, 2x 3.3kΩ, 2x 1kΩ Resistor
4x 10µF Capacitor
1x USB Type-C breakout board
1x Audio jack
1x Audio plug