Holiest Grail


Main Details
Maker Electro-Harmonix Company
  • Effect (Spring Reverb Pedal)
Form Factor Floorstanding
Signal Path Digital Hardware (including Analog Connections)
Power Source 9LDC-500 power supply included
Notes The Holiest Grail is built around a high quality stereo reverb algorithm coupled with a painstakingly developed simulation of spring reverb as found in guitar amps and dedicated reverb tanks. The decay time, damping and diffusion parameters of the reverb can be freely tweaked to design an infinite array of natural and unnatural sounding spaces. A versatile pre-delay can be applied to the reverb, and a feedback control has been added to the pre-delay to provide even greater sound-sculpting capabilities for spatial simulation and/or experimentation.
As an aid to both live performance and recording, the box is able to store 8 user presets and can be remotely controlled via MIDI. A standard expression footpedal can be used to control the amount of signal sent to the reverb, a performance tool that can help personalize the sound.

Official Holiest Grail page: https://www.ehx.com/products/holiest-grail
EHX Holiest Grail manual: https://www.ehx.com/assets/instructions/holiest-grail.pdf
Additional Specifications


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