Hi Everybody! Excited new owner! AA-3 inbound get it tomorrow. i’ll preface by saying I have gone through the threads trying to find my answer, but not this specific set up, so here I am. I would like to switch between the four kickass channels on the Marshall.And of course access all the gloriousness of the amplifire. A youtuber had posted a video where I believe he was doing just that, he provided this, Going from memory the signal path was Guitar > Atomic Input > Atomic FX Send > Mesa Input > Mesa FX Loop Send > Atomic FX Return > Atomic Out > Mesa FX Loop Return - hope that helps That of course doesn’t incorporate the MS3, which I could just run into the front end. I have too many loops and inserts to figure out how to 4CM this thing LOL Amplifire loop use one of the loops in the MS3 Marshall serial effects loop The Marshall also has, A power amp insert.? With a preamp send, and a power amp return. All three things have MIDI in and through. I should eventually be able to switch amplifire presets and Marshall channels from the MS3. help! LOL Thanks!