The Rooster is a Booster. It’s based on a germanium style shoester. Cockle-doodle-do! Simple as 1-2-3, turn it clockwise for more magma through the amp. Adds gain and a touch of grit, the toggle gives you brighter north and darker south. 9 volt negative pin power supply makes it standard and compatible with almost every power supply out there. Along with the small size case, you can squeeze it into any pedal board setup.