I know there's an expert here on octave pedals. I've read several threads here but haven't seen an answer for my need. I'm looking for an octave pedal that I can use for a lower octave without using my dry signal. I need something with immediate and flawless tracking that will reproduce the lower end if a 5 string on a 4 string. I only need this for a handful of tunes. Why? My group plays most of it's material back-to-back-to-back-to-back, so there is no time to switch basses. I tried the BOSS OC-3 and was completely unimpressed. Perhaps I'm going to need something more sophisticated than just a simple pedal. So please chime in and let me know if there is such a device, or if I'm going to need to do something else. Thanks!