Let’s take a walk through the inner workings of this amp. Along the way, I will be including some math and electronic theory. To fully understand how a guitar amp works, even a simple one like the AX84, you must know how to read schematic diagrams, and know what things like resistors and capacitors are. You also need some knowledge of electronic theory, but not much. If you don’t know what resistors and capacitors are, or don’t know what Ohm’s law is, I suggest a quick trip to your favorite search engine or library and find out.