The SUPER RAT is based on the RAT Distortion Pedal ,LM308 And Improvements based on the original circuit adds two effects , Use a three-position toggle switch to change the effects: classic rat ,big boost ,turbo rat. So it can use as distortion ,boost ,preamp,. Features: One three-position switch. C- classic rat distortion. B- big boost. T- turbo rat distortion. Tone( Filter) control Gain(Distortion)control Volume control True bypass switch 100% analog signal path On/Off LED indicator Dimensions (W/D/H): 112mm X 65mm X 38mm Weight: 0.6 lbs. (280g) Power Consumption: 9VDC/10mA Battery Type: 9VDC x 1 AC Adapter (Optional): 9VDC, Negative Tips (Regulated recommended) Input Impedance: 500k ohm (min) Output Impedance: 10k ohm Package includes: 1*guitar effect pedal Note: Power supply not included. Please use a 9V DC power adapter whose polarity is negative center otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual ( English ) 1 * Year warranty through our store No Duty to Canada and USA FAST 'N FREE USA Shipping (typically about 4 days) Ships from Canada (depending on stock availability, may also ship from our Niagara Falls NY. location) *Just to be clear on DUTY, (regardless of what warns buyers of ) Canada and the USA have a trade agreement in place that allows US citizens to purchase/import up to $800 dollars per purchase in to the United States from Canada with NO Duty at all, State taxes are another story, some states charge a TAX some do not, BUT NO duty.