LFOs are used for multiple applications in music making, from creating subtle changes to pitch for vibrato-type sounds, altering the amplitude for the classic wah-wah guitar effect and for filter modulation, commonly used to create synth bass wobbles. But their function doesn’t end there, making the new Vari-FO a great addition to any modular rack!
The Vari-FO has four independently-controlled Low Frequency Oscillators, each with adjustable ranges – allowing you to choose from high frequency audio rates to super slow oscillations, depending on what you need, by changing the capacitors on the front panel. Each LFO has CV input to control rate externally, for example, when you’d like to sync to a tempo clock.
It comes with Triangle and Square wave shapes, meaning you’ll get a smooth up/down ramp, or hard edged changes commonplace in chiptunes and controlling sync rates. Each LFO has its own gate and trigger output for sending data to control other parameters and modules – as well as being capable of patching to itself for some prime sonic experiments!
It has a reverse current protection and weighs-in at 12HP wide and 20mm deep. Check out the VoicAs store for more modular units, and see the video below for some wide ranging uses of LFOs – featuring our very own Vari-FO!
