I've got the Voice Touch and have used it on several gigs with guitar triggering the chord changes. Sounds good for the most part. The headphone output only works on the left side. Others have reported this problem, as well. Also, once you get your presets "set", you've got to be very careful or the unit will overwrite your preset with something else before you can stop it. It's sort of crazy at times. Don't know if that's a glitch, or just me.