An octave pedal takes the note from your electric guitar and layers on signals from other octaves.
This creates a full, dynamic sound. Some players enjoy combining an octave pedal with a fuzz pedal.
Some pedals combine octave and fuzz, such as the MXR Blue Box (electric guitar) or the MXR Sub Octave Fuzz (bass guitar).
We carry octave pedals from brands such as MXR, Digitech, and EBS.