The soul of the Little Devil Colored Boost is the Class A amplifier design and the selectable Feedback/Bias control. The six presets range from slightly fuzzy to a "in your face" Plexi sound. Each preset has its own style of harmonic distortion and clipping with different effects on a sine wave signal. Soft clipping, hard clipping, clipping on the top, bottom, or both sides of a sine wave, and significant changes in frequency happen with each click of the Feedback/Bias switch. Capable of 39db of boost, the Little Devil Colored Boost can easily range from gentle sustain to screaming vintage.
Specifications:
| Circuit Type | Solid-state, Silcon Transistor |
| Channels | Mono |
| Feature Set | Color Boost Feedback & Bias Highs Boost Range Bypass, True |
| I/O | 1/4" mono |
| Power | 1x 9-volt “BOSS” style power supplies or 1x 9-volt battery |