General Guitar Gadgets Opamp Big Muff Pi

Built this from Marc's stock. It was also intended for him as it was on his wish list. Dubbed it Cherub after Cherub Rock from Siamese Dreams because apparently Billy Corgan used an opamp Big Muff for some of the songs on that album.

http://www.generalguitargadgets.com/effects-projects/distortion/big-muff-pi/

Transparent decal with multiple layers of Motip acrylic clear varnish.