Based on MXR DISTORTION+,MXR MICRO AMP,DOD 250 OVERDRIVE,DOD YJM308. One toggle: 1,MXR? DISTORTION+ M104 2,DOD DOD250 Overdrive 3,DOD YJM308 4,MXR MICRO one toggle: two model clipping choose. SPECIFICATIONS Input Impedance 1 M? Output Impedance* 25 k? Nominal Input Level -22 dBV Maximum Output Level -14 dBV Noise Floor** -74 dBV Distortion Gain 10 dB to 45 dB, 1 kHz Bypass Hardwire Current Draw 2.5 mA Power Supply( not included) 9 volts DC NOTE : About this switch(MR/250/308) is only a little different : There are very few differences between the three originals pedals(mxr distorion+,dod250,and JYM308), so only you can find a little difference with a high-powered speaker and adjust the knob In a particular position. Or When playing a sweep, meaning when playing multiple strings of different frequencies at the same time, you can see the difference between these three switch(MR/250/308)). 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 *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.