I use this from my Roland TD-30 that does not have balanced out.
The mixer is pretty close, but I still opted to have this DI, to ensure that I have the same setup in rehearsal as live.
I use the phantom power option, and I cannot notice that this item is there. It just unobtrusively work.
I have a few other brand DIs but bought another of the DI20 to use for a keayboard. I like to have the stereo option in the same box.