i Have a Line 6 M13 a few years and I always used with external drive to achieve the best tone i could ever get, but it always was on the input of my amp. now I'm buying a new amp with an effects loops. my question is if I use the 4CM and use external drive do the overdrive signal will go to the effects loops of my amp? Because it's not been processed inside the M13. If the overdrive signal is going to the effects loop what should I do to not damage my amp and still use external drives with the M13?