I have mine plugged directly into my Voodoo PP2+ power supply with a barrel connector. Seems to work just fine. So I’ve had this for almost a year and am happy with it, still works, nothing quirky going on. I have found myself only using the hi harmony mode with harmony on the highest setting. We have 3 singers in the band (and I’m not the lead) and the high harmony seems to be the one mostly lacking, so this helps out. I keep gender and blend 50-50, with just a touch of reverb. I guess I’m not a very exciting user, but it does what I need it to do. And I’m not a great singer either (a reasonably good one), but a few weeks ago at a gig someone told a friend of mine that “every time that guitar player sang the band sounded incredible because he had such a unique voice” – swore I should sing more. I wonder if he heard the Voicebox and was thinking I’m something I’m not. Who cares as long as it sounds good.

I think what it has done is make me a more precise singer. If you’re on your note, it follows pretty well. If you’re off a tad, so is the Voicebox and things can sound pretty unpleasant. And either it follows the guitar chords extremely well, or it just adds harmonies well. I swear I can miss a chord completely and it still creates the harmony I’m looking for. It is still a little “robotic” sounding though, don’t expect it to sound like another genetically perfect human being, but when behind that regular human voice the “roboticness” is not very discernable during a song. Just talking though, you can pick up on the “roboticness” but that’s not something you’d ever do anyway. Not a box to have on all of the time, but nice for a number of songs in a set.