The Sand Storm is an incredibly responsive and versatile distortion pedal from Caline. Using the Presence and Distortion control it's possible to go from a light boost, through to a classic rock crunch and heavier distortion when maxed out. It's also incredibly good at responding to how heavily you pick the strings, so it's a very responsive pedal. Like all Caline pedals the CP27 has a durable metal construction combined with a true bypass foots witch. Works with either a standard 9v power supply or battery.