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    MT15 huge level boost from fx loop

    So I got a new noise gate pedal (Klirrton Schnauze, it's pretty great). When I use it with 4 cable method it's all fine, but when I use it 4 cable method with a preamp pedal into the fx return, there's a huge level boost. (guitar > schnauze input > preamp pedal > schnauze loop input > MT15 fx...