Zero-Loss FX Loop Kit

I had installed a simple serial interupt loop and it ruined the great crunch tone of a JMP50 clone. I really wanted to have some reverb and other modulation effects so I tried the MetroAmp loop kit. It works exactly as described, you will be hard pressed to tell the difference with this loop on or off once you get it set right, I cannot tell any difference and all my tone controls especially the treble work as if there is no loop in the circut at all. I'm using a G-Major Rack unit but I'm sure pedals would work just as well. directions were simple and complete. If you want a loop in your Marshall this is the one!