Classic Vox and Fender Blackface tremolo tones in a tiny package.  The Tidewater will have you floating on the waves of tone in no time. Controls: Volume:  Controls the overall volume of the unit.  You can set the volume at unity gain or use it to boost your signal.Mix:  Controls the depth of the tremolo effect. With the mix all the way down you can use the Tidewater as a boost preamp.Speed:  Controls the speed of the tremolo effect. Left is slower and right is faster.Internal Dip Switches:  Inside the pedal on the back of the PCB there are three small dip switches. When all three are in the down position, the speed of the tremolo is in the standard mode.  When all three are in the up position, the available speed is half of the standard mode, giving you slower speeds.Jacks:   Input:  1/4" jack on the right side of the pedalOutput:  1/4" jack on the left side of the pedalPower:  Uses 9V DC Negative Center