HOLIER GRAIL - Uncategorized Electro Harmonix - Free user manual and instructions
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| Product Type | Reverb Effect Pedal |
| Model | HOLIER GRAIL |
| Brand | Electro Harmonix |
| Dimensions | 2.75 x 4.5 x 2 inches (70 x 114 x 51 mm) |
| Weight | 0.5 lb (227 g) |
| Power Supply | 9V DC center negative (2.1 mm) adapter; battery optional |
| Current Draw | 50 mA |
| Input Impedance | 1 MΩ |
| Output Impedance | 100 Ω |
| Reverb Modes | Spring, Hall, Plate, Flerb (if applicable) – check manual |
| Controls | Reverb knob, Blend knob (if applicable), Mode switch |
| Bypass | True bypass (electromechanical relay) |
| Construction | Aluminum chassis |
| Indicators | LED on/off status |
| Inputs/Outputs | 1/4" instrument jacks (input, output) |
| Cleaning | Wipe with dry, soft cloth; avoid solvents |
| Safety | Do not use outdoors; keep away from moisture |
| Spare Parts | Contact Electro Harmonix support |
| Repair Service | Authorized service centers only |
| Warranty | 1 year limited warranty (varies by region) |
| Intended Use | Electric guitar or other instruments |
Frequently Asked Questions - HOLIER GRAIL Electro Harmonix
What power supply does the HOLIER GRAIL require?
The HOLIER GRAIL requires a 9V DC center negative power supply with a 2.1 mm plug. Current draw is 50 mA. A 9V battery can also be used.
Does the HOLIER GRAIL have true bypass?
Yes, the HOLIER GRAIL features true bypass using an electromechanical relay, ensuring your dry signal remains unaffected when the effect is off.
What reverb modes are available?
The HOLIER GRAIL offers multiple reverb modes including Spring, Hall, and Plate. Some versions may include Flerb (a modulated reverb). Check the mode switch on the pedal.
Can I use the HOLIER GRAIL with a bass guitar?
Yes, the HOLIER GRAIL can be used with any instrument with a standard 1/4 inch output, including bass guitar. Its high input impedance (1 MΩ) works well with passive pickups.
What is the BLEND control for?
The BLEND control mixes the dry and wet (reverb) signals. Turn clockwise for more reverb effect, counterclockwise for drier sound.
How do I clean the pedal?
Use a dry, soft cloth to wipe the exterior. Do not use any solvents, abrasives, or liquids. Keep jacks and controls free of dust.
Can I power multiple pedals from one daisy chain?
Yes, as long as the power supply provides enough current (50 mA per pedal) and is center negative. Avoid sharing with high-current digital pedals to reduce noise.
The LED is dim or not lighting up. What's wrong?
Check the power connection. Try a known working 9V adapter or a fresh battery. If the LED still fails, the pedal may require service.
Does the HOLIER GRAIL work with line-level signals?
It is designed for instrument-level signals. For line-level inputs, you may experience distortion. Use a reamp box if necessary.
How do I access the battery compartment?
Remove the four screws on the bottom plate. The battery compartment is underneath. Be careful not to damage the circuit board when replacing.
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USER MANUAL HOLIER GRAIL Electro Harmonix
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Product information
Brand : Electro Harmonix
Model : HOLIER GRAIL
Category : Uncategorized