Distortion
From Guide
Distortion can be both a wonderful and terrible thing. Whenever a signal is amplified, if the original signal and amplified signal differ by more than just volume, distortion has been introduced. When you plug a guitar in to a tube amplifier and crank it up, you hear distortion. This is a great type of distortion and leads to great guitar tone. Different types of amplifiers, as well as distortion effects, distort in different ways and color the sound.
However, when recording a vocal signal or an acoustic guitar, if the signal is recorded too loud or too hot, clipping may occur and distortion is introduced. This is often not desired, and in this situation, distortion is a bad thing.


