The Foundation Oscillator is an analog oscillator with a compact and distinctive vintage sound. The core of the oscillator is a transistor-based discrete circuit, using the same as the company's larger oscillator. In addition to the pulse wave and triangle wave that are output directly from the core, three waveform outputs that start from a sine wave and increase harmonics in different ways are installed. The overtone timbre changes continuously with the following two controls.
- Timbre: A control that continuously changes toward the waveform drawn on each output.
- Richness: A control that changes to a tone that is like hard sync