Very interesting concept ! I’m just at work, but I’ll messing around with this method when I get home and let you know the results.
Thanks @hotscience for [quote=“hotscience, post:12, topic:36664, full:true”]
The balance input can bring in an external source but as you turn balance up the external source disappeared. Its not affected by the overtone circuit or anything else.
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Just looking at the manual and all the inputs/outputs, I’m pretty sure you can get the audio back around into the slope/multiply/overtone circuits. maybe even get the oscillators to act as modulation … this could be interesting !!