Detail 01
Nano enclosure
The smallest EHX housing. At 4.49 x 2.76 inches it fits into gaps other reverb pedals cannot.
Product detailSKU #1274034486435
Electro-HarmonixHoly Grail Nano Reverb Guitar Effects Pedal
dynamicambientpost rockshoegaze
1/2
Independent shopping perspective
The Korena take
Compact reverb pedal in EHX's Nano enclosure. For guitarists who want space and ambience from a small box on a crowded board.
Strong match
Who this is for
- Ambient and post-rock players building washy textures
- Shoegaze parts where reverb is part of the tone
- Boards where space is tight but reverb is essential
Consider the trade-offs
When to look elsewhere
- Players needing stereo outs or deep parameter editing
- Anyone wanting presets recallable by footswitch
- Guitarists whose amp reverb already covers their needs
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Reverb pedal
Adds decay tails after your note. Best placed at the end of the chain so it sits over everything else.
Detail 03
$138
Mid tier for reverb. You get the sound rather than presets, stereo I/O, or an editing app.
Detail 04
Guitar effects pedal
Designed for instrument level. Runs in front of an amp or in an effects loop, not a line-level mixer input.
Detail 05
Depth of 2.76 inches
Shallow front to back, so it slots into a back row without pushing your board dimensions out.
Final check
Know before you order
- 019V power supply not included — check current draw on your board supply
- 02Reverb goes last in the chain, after drive and delay
- 03An amp with onboard reverb may make this redundant — compare first
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How big is the Holy Grail Nano?
4.49 inches wide, 2.76 inches deep, 2.09 inches tall. It is EHX's Nano-size enclosure, built for boards where space is limited.
02Does it need a power supply?
Yes, and one is not included. Plan on a 9V pedal power supply and confirm your board has a free output.
03Where should it go in my chain?
Last, after distortion and delay. Reverb placed before drive gets compressed and muddy as the gain stage clips the tails.
04Do I need this if my amp has reverb?
Not necessarily. A pedal gives you footswitchable control and consistency across amps, which matters if you play different backlines.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSize & weight
- Dimensions Wxhxd
- 4.49 inch x 2.09 inch x 2.76 inch
