Yep, I'm showing my lack of knowledge again.OK, I see.I believe you've got it backwards, Figgy. The footswitch is simply an On/Off switch, operated by foot, to more conveniently replace the functionality of the Overdrive button on the Rumble. It has no OD, or power, in it. As it says right on it, it can also switch between channels if the amp has 2 channels, which the Rumble doesn't.
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Interestingly enough, one of my former bands had an opening act where the bass player kept walking back and forth to his amp to switch the OD on and off. I remember the soundman asking him why he didn't get an OD pedal for his board or a footswitch of some kind. The bass player looked at the soundman like lobsters were crawling out of his ears. None of us knew what he was doing until he told us. Luckily, I won't have that problem.



