I bought this as a replacement for my previous OP-PRO. I can't speak for how long it will last, as these are notorious for going bad. But when they work, they are some of the best sounding preamps going. There's almost zero noise and the pre-shape Ovation has incorporated is so good, you almost don't even need to tough the EQ. It's actually good enough to record direct, which is rare for an acoustic preamp. Ovation has excelled at their preamp tech, hopefully with this newer version, the problems the older one had (bad volume control) will be a thing of the past.