Octave Effects

Octave effects adds overtones and/or undertones) to your signal.

Links

Tonepad - Green Ringer, MXR Blue Box, NeoCtavia, Octavia Octave, Octup, RM Octavia.

Theory

Purpose of diode in octave - This thread has some information about the diode used in some octaves, and a link to an article explaining how octaves work (tip: you can view other pages of the article by editing the url).