ThreeOsc is a subtractive synthesizer featuring three oscillators capable of generating rich and dynamic sounds. Each oscillator offers four distinct waveforms along with a noise option, providing a broad sonic palette for sound design. The synth supports up to eight voices in polyphonic mode, as well as a monophonic mode for lead and bass sounds.

The instrument includes a voltage-controlled amplifier (VCA) with an ADSR envelope, allowing precise control over amplitude shaping. Its voltage-controlled filter (VCF) offers two selectable filter types, both equipped with ADSR envelopes to sculpt the tonal character. An additional low-frequency oscillator (LFO) adds modulation possibilities, enhancing the expressiveness of the sound.

ThreeOsc also features velocity sensitivity for both filter and amplifier, ensuring dynamic response to playing intensity. A selectable pitch bend range adds further expressive control, making this synth suitable for a wide range of musical styles and performance techniques.