Overdrive, distortion, fuzz, waveshaping and bitcrushing explained
Answer in brief
Overdrive rounds off loud peaks and keeps the shape of the note. Hard distortion and fuzz square the wave off for a buzzy sustain. Waveshaping and wavefolding bend the wave into bright new shapes, and bitcrushing removes detail so the sound turns grainy.
Overdrive
Overdrive is the mildest form. It flattens only the loudest part of each wave, so soft playing stays fairly clean and hard playing breaks up. That makes it responsive: a synth line played with velocity or a drum loop full of ghost notes keeps its dynamics. Kilohearts puts overdrive first among the five types in its free Distortion, next to saturate, foldback, sine and hard clip.
Hard distortion and clipping
Push harder and the tops of the wave get cut flat. Flat tops add strong odd harmonics, the hollow buzz of an amp turned all the way up. Notes seem to sustain longer because their quiet tails rise to nearly the level of the attack. This is the sound of aggression in a mix, and it is also why a heavily distorted bass can feel smaller rather than bigger.
Fuzz
Fuzz goes further, until the wave is close to a square. The result is thick and woolly with a rasp on top, and notes hold almost forever before they sputter out. It is at its best on a mono synth lead, on a bass with its lows split off or on a riff that should sound torn.
Waveshaping and wavefolding
A waveshaper sends the signal through a curve you can change. Wavefolding is a special case: when the wave passes a limit it folds back down instead of flattening, so more drive brings more and more bright, shifting overtones. It sounds less like an amp and more like a filter sweeping open. Unfiltered Audio lists wavefold, overfold and harsh fold among the ten clippers in Dent 2.
Bitcrushing and sample-rate reduction
Bitcrushing cuts the number of levels each sample can take, which adds a gritty hiss that follows the note. Lowering the sample rate removes high detail and adds metallic tones that clash with the key. Together they give the hard edge of early digital gear and old game consoles, and a touch of either adds crunch to drums. For the softer, worn sound of old samplers and tape, Best Lofi Plugin is the better guide.
Sources for this page
- Studio 56: Studio 56’s official website, the publisher of this reference.
The practical advice here is our own. A maker's description of its product is not a test of how it performs.
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Cite this page
Best Distortion Plugin. “Overdrive, distortion, fuzz, waveshaping and bitcrushing explained.” Studio 56 Reference. Content reviewed November 8, 2026.
https://bestdistortionplugin.com/distortion-types/