A tribute to that tone that has delivered thousands of riffs. The EHX Satisfaction Plus Fuzz has the 60's "growl", the creamy fuzz or the fat fuzz that can move mountains, you choose! The closely related Satisfaction pedal was a pure declaration of love for a classic sound, the Satisfaction Plus Fuzz takes everything further with the Fat/Normal function and the Bias and Tone controls. FAT provides a tone that is fuller and warmer than Normal mode. The Tone control, which is active, handles both bass and treble for the fuzz effect, providing an incredibly wide range. With the Bias control, you can easily adjust the character of the Fuzz, from balanced and open to closed and biting. Fuzz circuit inspired by the classic Fuzz sound from the 60's Fat-Mode provides a fuller and warmer Fuzz sound Bias control adjusts the character of the Fuzz sound Tone control regulates the bass and treble of the Fuzz effect Attack & Volume controls regulate the amount of Fuzz and the output level True Bypass 9 Volts Battery included (9 Volts Power supply: Optional)