Dan Armstrong Green Ringer Guitar Effect - Circuit Scheme
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File:Atmos - Green-Ringer-based octaver with extra LED clipping (2007-02-05 21.45.11 by germanium).gif - Wikimedia Commons
Guitar FX Layouts: Dan Armstrong Green Ringer
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Dan Armstrong "Green Ringer" /// Clone and Mods
Dan Armstrong Green Ringer mods
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Guitar FX Layouts: Dan Armstrong Green Ringer
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
