I've owned a TC Electronic Nova modulator for a while now, and I just had a question. It has stereo in and out and two modulation engines... I've looked in the manual and on the website, and nothing seems to make it completely clear (at least to me)... Are the two engines specific to the left and right channel? Or does one feed into 2, etc... I was at a jam using a single amp, and had to disconnect one side and when I went to use modulation, nothing there. I was simply using the right channel, with engine 1 on only. Was just curious if other users could shed some light on how it actually functions.