JHS Pedals - now available...send us your EHX Holy Grail (big box version only) and we can Mod it to Dual Reverb Mod. Details at: http://www.jhspedals.com/electro-harmonix-holy-grail-dual-reverb-mod | Facebook
Electro Harmonix Holy Grail Max Reverb — David's Guitar Loft - Sales, Music Lessons, and Instrument Repair
Electro-Harmonix Holy Grail Neo | Reverb
Electro Harmonix Holy Grail Nano Reverb – Thomann United States