Here is what Mike says...
'Ebb & Flow - Tremolo. Gold Block tin Tremolo Pedal. Controls for Intensity and speed. Also includes switch for fast / slow rates.
Inspired by the Monster Effects ~ Swamp Thang. Designed to sound reminiscent of a Fender brown face tremolo in a small convenient package. Runs on external 9v standard pedal power. Tip neg, sleeve positive.'
Write to