Boutique Octave Green Ringer Clone Guitar Effects Pedal | eBay
Perf and PCB Effects Layouts: Dan Armstrong Green Ringer
Green Ringer "Nulling" Mod
WD Music Green Ringer | Effects Database
File:Atmos - Green-Ringer-based octaver with extra LED clipping (2007-02-05 21.45.11 by germanium).gif - Wikimedia Commons
Josh Smith - Quick and Dirty - Why I choose Green Ringer style octave over the Octavia! - YouTube
Mini pedals: small size, big benefits?
Dan Armstrong™ Green Ringer™ | General Guitar Gadgets
RING MODULATION | Dan Armstrong 'The Green Ringer' VS LovePedal 'Believe' | Board Or Bin - YouTube
Dan Armstrong Green Ringer Guitar Effect - Circuit Scheme
Vintage Dan Armstrong Green Ringer Ring Modulator Effect Mu Tron Musitronics | eBay
Emerald Ring - Best Octave Up Green Ringer style PCB - GuitarPCB
Some simple improvements to the Green Ringer
Dan Armstrong Green Ringer Guitar Effects Pedal Green | Musician's Friend
Green Ringer | Jeds Peds
Dan Armstrong™ Green Ringer™ | General Guitar Gadgets
Green Ringer Deluxe Analog Octave Up Pedal (video demo in description) | Reverb
Dan Armstrong Green Ringer | Reverb
Dan Armstrong Green Ringer mods
Dan Armstrong "Green Ringer" /// Clone and Mods
File:Dan Armstrong Green Ringer circuit - an octave-up effect with a ring-modulator touch to it - just finished building (2006-03-05 22.51.45 by germanium).jpg - Wikimedia Commons
EmeraldRing kit, 18,50 €
Dan Armstrong Green Ringer Guitar Effect | Electronic Schematic Diagram
