Electro-Harmonix Holy Grail Max Reverb PedalThe Electro Harmonix Holy Grail Max is 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 and 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