New multi FX Looper day. Just got this Boss MS3.
I have a custom cable for my JSX, that I was using with my Replifex.
It works with the MS3, so I can switch to all 3 channels. Running it 4CM.
I quickly setup 4 presets. Not to difficult to program, but I haven't gone too deep with it yet. Only got to play through my Captor and Binary Cab, but it sounds pretty killer so far. Running a Digitech Drop and Freqout up front. Caline 10 band EQ in one of the loops. I need to pickup a cable for my expression pedal. Pretty impressed with it.