A guitar amplifier is not merely a sound-reinforcement device; it is an intrinsic part of the instrument itself. While a stereo amplifier is designed to reproduce sound with total accuracy and transparency (high fidelity), a guitar amplifier is designed to shape, color, and often distort the signal to create timbre and texture.
: Understanding how the output transformer or solid-state output stage interacts with the speaker’s resistance. Harmonic Distortion guitar amplifier electronics basic theory pdf