
Retro Synth Analog oscillator in MainStage
The synthesizer oscillators are used to generate one or more waveforms. You set the basic tonal color with the chosen waveform or waveforms, adjust the pitch of the basic sound, and set the level relationships between oscillators. The signal of one or both oscillators is then sent to other parts of the synthesizer engine for shaping, processing, or manipulation. See filter controls, amp and effect controls, modulation, and global and controller settings.
Analog synthesizer sounds are typically attributed with having a warm and rich tone. You can create a wide variety of timbres using this synthesis method, notably string and pad sounds, synthetic brass, bass, and percussion.

Analog oscillator parameters
Shape 1 and 2 knobs: Choose the type of waveform that each oscillator generates. The waveform is responsible for the basic tonal color. The oscillators output a number of standard waveforms—noise, rectangular, sawtooth, and triangular.
Shape Modulation knob: Choose a waveform shape modulation source, and set the modulation intensity. The centered (off) position disables all waveform shape modulation with the LFO or filter envelope.
Vibrato knob: Set the amount of vibrato (pitch modulation).
Semitones knob: Set the pitch of oscillator 2 in semitone steps, over a range of ±2 octaves.
Cents knob: Precisely adjust the frequency of oscillator 2 in cents (1 cent = 1/100 semitone).
Mix slider: Crossfade (set the level relationships) between the oscillators (Shape 1 and 2).