Sorry ... I meant the low pass/high pass filter.
A pedal like this can tame unwanted harsh treble frequencies (low passing) in a much more precise way than most amp EQ's, and likewise it can tame that wooly, low rumble that just seems to overtake things (high passing) with similar precision. It's a great tool for dealing with rooms that are boomy, have harsh reflections, or both. Some amps have very precise EQ points that can do similarly, but I would contend that most do not, so a L/HPF pedal can be a very useful utility device.
It may be worth looking into, despite the limited amount of gigs coming up, but I expect you'll be just fine running straight into your amp for the remaining shows.