Octave circuit from the TWA Great Divide. Octave down, up, filtering, and Octavia-style features allow the user to select from many different, classic, octave effects. Accepts external footswitch for “solo” mode, which allows the player to turn add the octave effect as desired. https://www.youtube.com/watch?v=V5WJpYEFZyI https://godlyke.comClick on the title for more