Electro-Harmonix Holy Grail Plus 中古|ギター買取の東京新宿ハイブリッドギターズ
Electro Harmonix Holy Grail Max – Thomann UK
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
Holy Grail Nano | Reverb - Electro-Harmonix
Electro-Harmonix Holy Grail Reverb Pedal (Demo by Peter Stroud) - YouTube