Hi guys, I'm new here to the form. I just recently got the Moen GEC9 and have been using it to switch the channels on my Dual Rec as well as effects at the same time. However, whenever I use channel 2 or 3, there is a loud hum that occurs, which I have no idea how to get rid of. I have set it up the same way that Moen says to for 3 channel amps, but I was wondering if there is another way that I could cable the unit without having to run it through the effects loop in order to switch channels. Is it not possible to run it through just loops 7 through 9 or must I use the effects loop of the amp? I have an early 2000s Dual Rectifier. Thanks a lot everyone.