Classic Overdrive: The ISET Dumbler effects pedal is a vintage Dumble amp simulator, which provides an unmistakeable, classic overdrive sound. | Wide Range: Provide you with sound ranging from a tasty light overdrive to a juicy medium low distortion. | 4 Regulator: Shape your sound via the gain, tone,voice and master volume dials.These functions provide optimum control for your desired effect. | Sturdy and Mini: The sturdy and heavy-duty true bypass footswitch engages the pedal with a smooth action, without effecting the original tone.whilst saving space on your pedal board due to its compact mini design. | Note: Please note this pedal cannot powered by batteries. Need a DC 9V power supply with negative in the center to power up. Please buy it separately at iSET Music Store. Hope you will enjoy and use this Guitar Chorus Pedal.