Catalinbread Karma Suture GermaniumWe try out a lot of different circuits at Catalinbread when looking for new ideas, always looking for that spark of something special. During one such prototyping session, one circuit really stood out. We're talking about a rare and obscure circuit known as the Harmonic Percolator. Wow! There's something to be mined here! This circuit has the amazing property of generating predominantly even order harmonics which creates an amazingly sweet and clear