Re: Boss RC-3 new owner seeks advice or commentary
All you need is a little fsU footswitch to toggle between or advance through phrases.
Get two of the fsU (they can be slide-locked together for one solid unit if desired) or just get a double switch.
You will also need a stereo/dual-mono cable.
The stereo-left side is a tap-tempo and instant kill, and the stereo-right controls the scrolling.
The manual explains time setting on page 13, and the section on remotes explains the scrolling.
You can scroll forward or back while the last round of a phrase is playing, then upon completion of the current phrase it will move forward or back depending on how it was cued.
It only needs the stereo-right switch connected to scroll, in the case you only have one. That is the small ring side of the plug iirc.
You can always auto-cue phrase changes "manually"/by-hand,,,,,,,,but then you need a table and sometimes very quick hand.