I had a UBB for a few years. Here on Maui, only got to use it for maybe 8 shows or so. After awhile, channels started dropping out intermittently even with a fresh battery. Gave up on the UBB and went with the Sound Pro's small 9v bbox. Have only had a chance to use it a few times, but I'm much more confident that I'll get a decent recording unless it's something I screwed up.