Thanks to an original mixture of FM, AM, additive and substractive synthesis, Rainbow is able to produce a wide assortment of sounds, from analog emulations or synthesized drums to 80's electric pianos or synth basses.

Features:

* VSTi & Standalone versions
* FM, AM, additive and subtractive synthesis
* 1 to 4 oscillators per voice
* Up to 24 voices (CPU dependant)
* Selectable shape (sine, saw, square, triangle, noise)
* Coarse / Fine tuning knobs, with selectable keyboard tracking mode
* LFO mode
* Distortion (Waveshaping knob)
* APDSR (Attack/Peak/ Decay/ Sustain/ Release) level envelope
* Control of the level by midi velocity and/or key position
* 4x4 Frequency and Amplitude modulation matrix
* Selectable Low, High, or Band pass double mode filter, with cutoff and resonance controls
* APDSR envelope and env mod knob
* Resonance controllable by midi velocity
* APDSR pitch envelope
* Portamento
* High-quality oversampling mode with antialias filter
* Fully midi-controlled, all controllers can be customised
* Supports Doepfer Pocket Dial controller
* 16 step sequencer
* Microtuning support.