Thanks, L3apr. I understand that but it does not work on other than the clean channel. I think it may if you reset to factory first but I don't want to fuk with that right now, and that would mean resetting to factory every time you wanted to reprogram any model. If I tap Insane model, turn down every single knob to off, then set the bass, mid, treble to 5, give it a bit volume - there is still some distortion. Not like insane model, but definitely some echo and some other fx - not sure what. My feeling is the amp is not defective. There are too many people with the problem. I think the description of the amp's abilities to set custom model profiles are misleading.
I am very curious if you or anyone can do the following: Set the clean model to your own custom model. Save it. Set any other model, say insane, to utterly clean as well and save it. Is the sound now clean on the insane model as well? Was it before the save? I don't have a foot switch. Can't see why that would affect it but nevertheless, try with and without.