So I've just recently started having this issue: the negative output from my ES-4 is very jittery when in bipolar mode, only affecting the 5th output. However when I set the 4th output also to bipolar mode, this seems to fix it. I don't have this issue with any of the other outputs.
Here's a video demonstrating the issue: https://www.youtube.com/watch?v=pQAO1eGmK6U
You can see the jittery negative output on 5, and around 16 seconds in I turn output 4 to bipolar mode (in ES-4 controller), which fixes it.
I'm routing an LFO -> ES-4 controller, and the output on the ES-4 controller is smooth which is making me think it's a hardware fault.
Anyone got any ideas what could be causing this?
Cheers br> br>