Osc 4 is very different from the other Oscillators. It does not use the same approach as the other oscillators and it even includes a phaser at the oscillators’ stage.
It sounds great used as a mono oscillator, but also great when used in pair for stereo effects. It allows to detune each oscillator to reach a very fat sound by creating slight differences between the left and right channels (when used in pairs).
For a few sound examples, please click here