The Holy Grail is Digital Reverb in a compact guitar pedal. It contains three different reverb algorithms: SPRING, HALL and FLERB. All three algorithms were designed and tailored for the electric guitar but they will work equally as well on most instruments and voices.
The SPRING algorithm is a recreation of the classic spring reverbs that arefound in many guitar amplifiers.
The HALL algorithm is a new, lush reverb.
Finally, FLERB is a beautiful reverb that other pedals fail to match. You will have to hear it for yourself!