Holy Grail Plus
| Brand | Electro-Harmonix |
| Function | Effect (Spring Reverb), Effect (Hall Reverb), Effect (Room Reverb), Effect (Flerb Reverb) |
| Country | USA |
| Form Factor | Footswitch |
| Dimensions | Dimensions in inches: 4.0 (w) x 4.75 (l) x 2.25 (h) |
| Links | Official website |