So guys, I've tried to figure it out by myself but failed at some point. I'm rearranging my pedalboard recently adding B3K and Swollen Pickle to my old and beloved Hartke VXL. Wanted to have a little bit more grit in my tone and then to switch to a hard fuzz. The chain now goes SP>MXR 10 EQ>B3K>Hartke and I'm pretty happy with it. After couple of days I'm planning to add Boss LS-2 and to put in a loop the SW and the EQ and leaving the other two like "always on". The idea is to have more control on this "wild thing". Now to the point. I first thought that the "right" way to go with the order was Hartke>B3K>Loop>SW>MXR. It seemed logical but didn't like the sound of it at all. I know about the matching impedance, but I couldn't find any specs for the input and output impedance of Hartke and B3K. To be easier: Boss LS-2: In - 1M, Out - 1k WH SP: In - >36k, Out - <26k MXR EQ: In - 470k, Out - 5k My bass have PJ Barts and active\passive switch but I prefer and use the passive configuration. I don't have the looper at the moment and I'm not sure how exactly gonna use it. Like blender or just a loop switch. Of course "what sound good for me" is the way to go but still curious how things work in theory and in real life. Waiting to hear your answers and opinions!