So who has an effects loop on their amp? Do you use it? Why? Do you not use it? Why? I might have an issue with the loop on my Hot Rod Deville 2x12. The other night at band practice everything was fine for the first couple of hours, and then the volume pretty much cut in half. The tone was identical, no weird noises or popping, just a big drop. I did some research and of course it could be one of half a dozen things, and I'll figure that out, but I'm just curious how necessary the effects loop is, or if most people just go, "meh," and skip it.