The EHX Holy Grail Max, an easy to use, stellar sounding reverb pedal. The Holy Grail Max delivers four types of studio quality reverb: SPRING, HALL, PLATE and REVERSE all designed for the discerning guitarist but also great with other instruments on stage or in the studio. Included is an analog wet/dry control that provides a constant volume curve as you turn the BLEND knob from fully dry to fully wet while also keeping your dry signal analog through the pedal.