The Tone Job is a very versitile preamp pedal with the ability to handle and shape the tone from electrical guitars, bass guitar, synthesizer machines and just about anything else you can plug in. It is a complete tone enhancement tool designed around a stereo preamp to cover as much frequency range as possible. The treble, bass and middle controls will cut or boost up to 20db. In addition to that, the level control will boost the signal (post EQ) up to 5 times the input depending on where the dial is set.