Product Description
The Mastro Valvola LFO is an optical tremolo pedal that captures the warm modulation typical of vintage valve amplifiers. Utilizing an opto-isolator in its analog audio signal path, this pedal delivers rich, enveloping tremolo effects reminiscent of the 1960s.
Thanks to its digital control system, the Valvola LFO offers a diverse range of modulation waveforms, enabling musicians to explore both classic tremolo sounds and innovative, unique textures. This versatility invites experimentation, making it suitable for creating hypnotic atmospheres and inspiring soundscapes.
Technical Specifications
| Current | 50mA |
| Voltage | 9V DC, center negative |
| Circuit Type | hybrid |









