The DARK MOUSE effector is a high-quality pedal that diversely changes the tone of a guitar. - Brand: DONNER - Model Name: DARK MOUSE - Type: Guitar Effector - Controls: LEVEL, GAIN, TONE - Connectors: INPUT, OUTPUT, DC 9V This is a junk item!! The middle switch doesn't work, so it's stuck in one position. Someone who can fix it, please take it!!(´д｀)