New Electro-Harmonix EHX Super Pulsar Stereo Tap Tremolo Guitar Effect Pedal Holy Grail it is also effective as

it is also effective as a preamp to use as a basis for guitar tones

Xotic Wah is modeled based on the Holy Grail wah

Output volume and master drive controls

External Control - Compatible with Source Audio expression pedals

New Electro-Harmonix EHX Super Pulsar Stereo Tap Tremolo Guitar Effect Pedal Holy Grail it is also effective asA truly super tremolo with powerful controls and signal routing. Sculpt the tremolos shape with adjustable sine, triangle and pulse waveforms while tap tempo and tap divide ensure synchronicity. Create your own rhythmic patterns and store them. Save and recall up to eight customized preset programs. Conjure moving tremolos on the fly with EXP control over Rate, Depth, Shape, Phase or Volume. Deluxe I O lets you choose stereo in out, mono in stereo