Sub Osc

Can anyone explain to me a little bit about the sub osc?? I’ve read about it in the manual and I"m aware that it’s 1 octave below DDS1 and fixed to its frequency. Is the sub-oscillator mono?? I’ve been thinking about how to create really wide sounds, but still keep the low-end intact, and I’m wondering if there are ways to do that without post processing? It would have been really cool if there was an EQ you could set on the detuning of DDS1 so that it only occurs above a certain frequency, but I think that’s a bit of a stretch as far as a feature request.