My band has been working on a few songs that are tuned down a half step. I've been bringing a second bass to rehearsal, that is tuned as such. We gigged the new songs last week, and I've found that changing basses back and forth is a pain in the axe. We tried to group the downtuned songs, but they didn't sequence right for the set. I don't want a Hipshot that drops just my E, and I'm not a 5er guy. Is there a stomp that I can set to tune me down without swapping basses? I have a MicroPog, but that only shifts an octave up or down. What I'd like is a simple box that can adjust by half steps and doesn't have any latency (or at least so minimal that it's doable).