All analog circuitryEasy to use—Just push the pedal forward and the effect is engagedBetter-than-true-bypass achieved by a noiseless FET switchOpen frequency responseReliable, wear-free, noise-free optical operationBypassed when pedal is all the way back9V operating voltage, 50mA current consumptionWill accept standard 2.1mm AC adapter supply plug, center negativeBlue and red LED"s to show pedal is engaged and its modulation ratesLightweight, high-quality aircraft aluminum casting and rugg