Hello, sorry for the late reply. Went out to buy a Send/Return Insert cable that works like hurghanico described and pictured. I followed the diagrams exactly with the cable and his descriptions and everything works! What I wanted was to do the 4-cable method, but I thought the Insert jack was going to hinder me, turns out buying a Stereo to Mono 1/4 inch cable is what I needed to complete the method, and everything sounds great, now that I can bypass my amp's preamp. rd2rk, those 2 jacks are specifically for the footswitch that came with it. The footswitch has 2 inputs/jacks as well. Not sure what they mean I just now you plug both ends on the same colors and the footswitch works.