Mooer MRV2 Sky Verb Digital Reverb Controls for the Mooer Sky Verb include Decay, Mix and tone. The Mix determines the amount of effect in your guitar signal. The Decay knob will alter the decay time of this reverb pedal. You can then adjust the tone to taste. The Mooer SkyVerb Reverb Pedal also has three different settings: Studio, Church and Spring. This is achieved with a built-in micro switch. It delivers reverb in the classic sense. These are all classic reverb sounds that have been expertly created digitally. The Studio setting delivers is warm and natural and the decay knob can show different sizes of indoor reverb effects. The Church setting has a smooth, natural reflex reverberation. Lastly, the plate reverb lets the steel or gold tinsel vibrate and gets the man-made mixed sound by referring to the vibration frequency. Features: Full metal shell. Very small and exquisite. True bypass. Requires DC 9V Adapter power supply center negative. ( Not supplied) Mooer recommends using their own power supply's for optimum operation. 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) No Duty to Canada and USA FAST 'N FREE USA Shipping 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.