I have this set up and the way I have it done – just the outputs 1,2 of the h90 into the line in of the stomp – does mean that the amp/cabs I’ve tried have resulted in a mono signal. Probably because the IRs are mono. It’s possible I could run matched processing on the LR signal chain on the stomp but I haven’t tried this yet. I assume the same issue is present in theory when using an insert but suppose if you’re inserting the stomp before the h90, this is a mute point.
