I got a Marshall Mosfet lead 100 a few days ago and I love it but I'm having trouble figuring it out, I don't have a foot switch so to switch between clean and overdrive I plug in a patch cable. But under the gain knob it says "pull eq", when pulled it sounds like a separate channel all together, kinda like over over drive! It's quieter than when it's pushed but has more gain to it. I was wondering if anyone could help me figure out the whole channel thing? I'd really appreciate it lol