A supersaw lead is built from two detuned saw-wave oscillators with many voices and a subtle LFO pitch modulation

A supersaw lead — the signature melodic sound of trance and Hardstyle — is constructed by loading two standard sawtooth wave oscillators and assigning each many ‘voices’ (unison voices), then detuning each voice slightly and also detuning OSC 2 further relative to OSC 1. The chorus-like beating between all these detuned copies produces the characteristic thick, shimmering sound. Refinements include: a slow sine LFO (at 1/8-note rate) applied to fine-tune of both oscillators adds subtle movement; a short pitch envelope on OSC 1 and 2 adds a laser-like attack transient; a white noise layer through a high-pass filter adds breath/air. Multiple layers of this patch are stacked (2–3) for thickness.

Examples

In Vital (or Serum), OSC 1: 8 voices, detune 20 cents; OSC 2: 8 voices, detune 30 cents, pitch -12 semitones; LFO1 sine at 1/8 → fine tune both OSCs at ~35% depth; ENV2 short → OSC pitch for laser attack.

Assessment

Explain why stacking many detuned saw wave voices creates a ‘supersaw’ sound. What does the pitch LFO add that simple unison detune does not?