I joined this forum because I’m having the exact same issue. I spent 3 hours yesterday trying to get any effects at all out of the out 1 and 2 from my newly acquired MOD Duo X.
Headphones works as expected with the effects presents. But no matter what I try, there simply is no effects on the Out 1 and 2.
My last resort before totally out of ideas is that, since the Duo X has balanced outputs and my XR18 mixer also has balanced inputs, to try to use balanced cables between the Duo X and the XR18.
I have so far only used regular unbalanced 6.3 instrument cables.
Can perhaps someone with more technical knowledge tell me if this can actually be the issue? The only thing I can think of is that the unbalanced cable is somehow shorting the balanced in/out between the Duo X and XR18, and therefore removing the effects. But is this even realistic of me to think? Why is the clean signal going through with not even a touch of effects in signal?
(Not currently at the Duo X, so need to try this later…)