de la Mancha releases unstable – free random pitch modulation VST effect

de la Mancha has re-released ad freeware its unstable (previously offered for $8), a random pitch modulation VST effect plugin for Windows.

unstable likes to mess around with your audio pitch, with 3 subtle pitch modulation modes to simulate the unpredictable but lovable pitch instability of an old tape machine or an analogue synth. It doesn’t only do subtle though, you can also put it in ‘insane’ mode if you’d rather just FSU.


  • 3 modes of continuously random pitch modulation
    • buzz – rapid, fuzzy modulation
    • wobble – medium, jerky modulation
    • drift – slow, gentle modulation
  • adjustable frequency and level for each modulation mode
  • master level mode to adjust overall subtlety of effect
  • wet / dry mix level control
  • insane mode – removes all subtlety and smacks your pitch up
  • all controls mapped to midi CC values

unstable is available for instant download via de la Mancha.

More info:

unstable – free random pitch modulation VST effect

Scroll to bottom for more related news.