Movall MP-318 Woodent AC Preamp Movall MP-318 preamp Pedal for acoustic guitars, Produce clean tone and make the sound of the guitar more focused, melodious, bright, and mellow. TREBLE increases the brightness of the tone. Bass used to adjust the bass tone. Gain used to control the gain degree ANTI FEEDBACK avoid volume feedback. Features: Small, lightweight and exquisite Aluminum-alloy casing True bypass design Power: 9V DC adapter center negative LED indicator shows the working state. Product Dimensions: 9.6*4.2*5CM Weight: 0.25kg Note: Power supply not included. Please use the 9V power adapter whose polarity is negative center otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English Chinese) 1 * Year warranty through our store No Duty to Canada and USA FAST 'N FREE USA Shipping (typically about 4 days) Ships from Canada