I was looking for a non-intrusive pickup for my f-style mandolin. I didn't want to drill holes or make any fuss, possibly ruining it. This pickup came up in my research and after watching a couple of videos on YouTube, I was convinced the KNA MP-2 was exactly what I needed! I've only picked up the mandolin recently and I don't have any comparison with other pickups, but I'm also a music producer so I trust my ears. The KNA MP-2 is incredibly easy to setup and yet very solid. At first look, the piezo looks a bit frail but after installing under the bridge, it stays there and doesn't move. The sound is honestly better than I was expecting. It's very clear and bright so you may want to watch those high frequencies, but it perfectly reproduces the main features of the instrument.