Mastro Valvola LFO Optical Tremolo

If regular tremolo pedals just don’t cut it for you, check out Mastro Valvola’s new stompbox. The analog LFO Optical Tremolo crams in 16—sixteen!—different waveforms that evoke the sounds of the past while offering contemporary features and functions.

The 16 waveforms include “Quad Pulse,” “Tri Step” and, for the chaos-inclined, “Random Slopes.” Pick one, dial in the LFO speed (or tap tempo it out) and depth, then distort those waveforms with the “Symmetry” control. Unfortunately, you can’t save presets on this.

And at the heart of it all lies an ‘opto-isolater,’ which reproduces the “classic, warm enveloping modulation” of vintage ’60s tube amps, the Italian makers said.

Check out the demo video below:


The Mastro Valvola LFO Optical Tremolo lists for EUR 215. For more information, check out