HX Effects - shifting between clean and dirty with expression pedal in Helix Posted 20 hours ago 1 minute ago, Findlasse said: Thank you Sir! - this is what I want. I give it a go again. In my attempt to do so I had the mixer block at the beginning. I did not succeed in routing to either A or B for some reason - maybe it works better with the mixer at he end of the signal path. I am happy you say it can be done. It gives me relief to give it a go again! :-) If you can't get it to work, let me know. I can always try fiddling with it myself to see what works best.