[indytruckboy]

Just about any dirt pedal in front is going to kill some of the bass freq.
But I would try a Digitech Death Metal pedal if that's what you are worried about. That pedal can be had for a few bucks more than a Bad Monkey. It's a solid pedal. And if there is too much "death metal" there for you, it has a internal trim pot so you can kick it down a little.

You never did say what style of music you wanted to play out the thing.