Mosky Multi Spring Vintage Voiced 4 Mode Reverb Effect Pedal Boost and Modulation Controls The Mosky Audio Multi Spring ReverbThis is the MULTI SPRING REVERB.It gets it's inspiration from the Ghost Echo V3 Vintage Voiced Reverb. Some pretty wild sounds can be created with a little tweaking and maybe not for the reverb purist.From what I have heard..... a little of everything goes a long way. CONTROLS: 1. Attack: Adjusts the length of the pre-delay, from 30ms at minimum to about 150 ms at maximum. When the Dwell is set to self-oscillate, this will change the pitch of the oscillations. 2. Dwell: Adjusts the length of the decay. This will start to self oscillate around 3 O’clock, the pitch of the oscillations can be changed by turning the Attack control. 3. Depth: Mixes in the wet signal with the dry, unity is around noon and everything after that is boosted. One Toggle Switch: For Gain Option 4-MODE MODULATION SELECTION KNOB: 4 Different Reverb Modulation Modes. SPECIFICATIONS: Input Impedance:10 MΩ Output Impedance:1 kΩ True Bypass Note: Power supply not included. Please use a 9V DC power adapter whose polarity is negative centre 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 via USPS ) Ships from Canada *Just to be clear on DUTY, (regardless of what eCRATER 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.