Available as an assembled Pedal and as a DIY project.
This Pedal is currently available.
Harmonic Tremolo
Quaverato Harmonic Tremolo Pedal combines many features to make a great sounding, versatile, and practical stompbox. Available as a DIY KIT or Ready-to-Play, with or without MIDI implementation.
Zeppelin Design Labs Quaverato Harmonic
Zeppelin Design Labs Quaverato Harmonic