Holy Grail Nano

The Electro-Harmonix Holy Grail is a compact digital reverb pedal featuring three reverb algorithms: Spring, Hall, and Flerb. The Spring mode recreates the classic spring reverbs found in vintage guitar amplifiers, Hall provides a lush hall reverb, and Flerb combines reverb with a unique flanging-style effect. A single Reverb control acts as a wet/dry mix, allowing subtle ambience at lower settings and increasingly prominent reverb at higher settings. A three-position slide switch selects the reverb algorithm, while a footswitch engages or bypasses the effect. The pedal operates exclusively from the supplied 9.6V DC power adapter and does not support battery operation.