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Italian pedal maker Mastro Valvola unveiled in 2018 this gorgeous-looking optical tremolo, simply called LFO.

The effect is packed with features, including Tap Tempo, 16 waveforms, and Symmetry control to alter the shape of LFO waveforms. The waveforms feature some unheard of shapes, which can be tweaked into even more complex shapes through the Symmery control.

The signal in this pedal is 100%, although a digital brain controls the effects.

Take a look at the videos below.

Inspired by the optical technology of traditional valve amplifiers, the Mastro Valvola LFO is an optical tremolo that evokes the classic vintage sounds of the past, while offering a range of exciting new features.

The classic warm, enveloping modulation that distinguished amplifiers manufactured during the 60s is reproduced by the opto-isolator that lies at the heart of the analogue audio signal circuit. However, the opto-isolator is managed by a digital brain, allowing you to produce effects ranging from traditional tremolo to unique, inspirational waveforms, and experiment with new atmospheres and hypnotic effects that have never been heard before.

Immagine LFO sito




Main features:

  • 16 different waveforms
  • Symmetry control to alter the shape of LFO waveforms
  • Tap Tempo with 3 selectable divisions
  • Opto isolator variable resistance path as used in many classic amplifier circuits of the 1960’s
  • Power supply: 9V/100 mA
  • Size (L x W x H): 9 cm x 11 cm x 6.6 cm