CATALINBREAD PERSEUS DIO octaverThe Perseus Dio greatly expands on the concept of our original device, giving you a three voice all analog octave down device with adjustable octave filters. Three knobs control the mixer section, giving you one octave down, two octaves down, and a dry, boosted distortion. The Dry knob gives you a really great light distortion sound that's more than capable of pushing your amp into overdrive, but the fun starts when you control the levels of octave