Octave fuzz guitar effect pedal Octave fuzz guitar effect pedal circuit diagram part: – DI and D2 are 1N4148 – Q1 is MPS6515 – Switching could be improved with a full bypass mod – The IC is any low noise dual op-amp, shown is the 4558 (for example) Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)