Other notable features include the doubling of the modulation matrix, waveshape modulation on all waveforms, digital effects per layer in stacked or split voice mode, a polyphonic step sequencer per layer, and more. The Prophet REV2 is compatible with any existing libraries or patches from the Prophet '08. The instrument has inputs for a sustain pedal and expression pedal, which doubles as an input for control voltage for further sonic manipulation. Four 1/4" unbalanced TS outputs provide audio output, while a stereo 1/4" headphone connection allows for playing in quiet environments.