This Joyo R-05 Maximum Overdrive Guitar Pedal is a dual channel overdrive pedal from Joyo's Revolution series provides a huge range of diverse tone - from smooth and crunchy vintage overdriven tones to producing immense distortion sustained tones. It is highly tweakable and provides maximum flexibility. For guitarists after the famous tones of Cream, Pearl Jam, or the Rolling Stones, this pedal provides the lot. The Maximum has two channels, offering a drive component and a handy foot switchable boost option. The left is marked Hard/Flat/Smooth and selects the brightness of the mids. The right one lets you choose between MOSFET and diode clipping. Then add the four simple controls labelled Volume, Tone, Gain and Boost. Use it as a Boost pedal, Drive pedal, or combine both to take it to the Maximum drive level.